Data distribution method and device, electronic equipment and product

Abstract

The invention discloses a data distribution method and device, electronic equipment and a product, and relates to the technical field of data distribution. The data distribution method comprises the following steps: receiving a data transmission request of an upstream system; querying configuration information related to the service type based on the service type, and verifying the data transmission request; after the verification is passed, judging whether the configuration of the approved application in the configuration information is asynchronous processing or not; if the configuration of the export application in the configuration information is asynchronous processing, sending a data transmission request to a message queue, converting service data into a format required by the export application, and selecting a processor component corresponding to the access mode of the export application to write the service data into a system of the export application; otherwise, converting the business data into a format required by the export application, and selecting a processor component corresponding to the access mode of the export application to write the business data into a system of the export application. According to the invention, cross-system data transmission can be quickly realized.

Description

Technical Field

[0001] This invention belongs to the field of data distribution technology, and specifically relates to a data distribution method, apparatus, electronic device and product. Background Technology

[0002] As enterprises become increasingly more information-based, data transmission between different systems is becoming more and more frequent.

[0003] Traditional data transmission methods typically rely on static configuration files or code, making them ill-suited for dynamically changing needs. When business types or target systems change, manual modifications to these files or code are required, increasing maintenance costs and the likelihood of errors. Furthermore, different systems may use different data formats, such as JSON, XML, and CSV. Traditional data transmission methods may require different parsers and converters to handle these formats, further increasing the complexity and error rate of data transmission. This significantly hinders the rapid transfer of data between different systems.

[0004] Therefore, how to provide an effective solution for quickly realizing cross-system data transmission has become a pressing problem in existing technologies. Summary of the Invention

[0005] The purpose of this invention is to provide a data distribution method, apparatus, electronic device, and product to solve the aforementioned problems existing in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a data distribution method, comprising: Receive a data transmission request from the upstream system, the data transmission request including the service type and service data; Based on the business type, query the configuration information related to the business type, and verify the data transmission request; After the verification is passed, it is determined whether the configuration of the exit application in the configuration information is asynchronous; If the configuration of the exit application in the configuration information is asynchronous, the data transmission request is sent to the message queue, the business data is converted into the format required by the exit application, and the processor component corresponding to the access method of the exit application is selected to write the business data into the system of the exit application. If the configuration of the exit application in the configuration information is not asynchronous, the business data is converted into the format required by the exit application, and the processor component corresponding to the access method of the exit application is selected to write the business data into the system of the exit application.

[0007] In one possible design, the method further includes: Create a data transfer record after successful verification; After writing the business data into the system of the exit application, the method further includes: Receive the data transmission status and data execution status returned by the system of the application to be approved, and update the data transmission record based on the data transmission status and data execution status.

[0008] In one possible design, the configuration information related to the service type includes parameter structure, admission application, exit application and / or routing configuration; The verification types for verifying the data transmission request include parameter verification, identity verification, duplicate verification, application verification, service type verification, service data verification, service type access and exit verification, and / or service type routing verification.

[0009] In one possible design, the system that selects a processor component corresponding to the access method of the exit application to write the service data into the exit application includes: Select the processor component corresponding to the access method of the exit application, and write the service data into the system of the exit application based on the routing configuration in the configuration information.

[0010] In one possible design, the processor component corresponding to the access method of the exit application is an API processor component, a database processor component, a gRPC processor component, a message bus processor component, or a client proxy processor component.

[0011] In one possible design, writing the business data into the system of the exit application includes: Convert the business data into binary plaintext of a specified length; The initial key is XORed with the binary plaintext to obtain the preliminary encryption result G; The initial encryption result G is divided into groups of four bits and then converted to decimal to obtain multiple decimal data Gi; Multiple decimal data Gi are sequentially mapped into a hash table using a hash function, and collisions are handled using linear probing. Record the position of each decimal data Gi in the hash table, and the number of probes Ci required to detect the position using linear probing; The initial key is expanded into multiple subkeys with the same number of decimal data Gi and corresponding one-to-one with each other using the DES algorithm. Based on the index of the subkey corresponding to each decimal data Gi and the number of probes Ci corresponding to each decimal data Gi, the new index of the subkey corresponding to each decimal data Gi is recalculated to obtain a new subkey sequence. The business data is encrypted based on the new subkey sequence to obtain encrypted business data. The encrypted business data is written into the system of the exit application.

[0012] In one possible design, the new index of the subkey corresponding to the decimal data Gi is A = (K × i + s) % N, where K represents the key length of the initial key, i represents the index of the subkey corresponding to the decimal data Gi, s represents the decimal data, N represents the total number of subkeys, and % represents the modulo operation.

[0013] In a second aspect, the present invention provides a data distribution apparatus, comprising: A receiving unit is used to receive data transmission requests from an upstream system, wherein the data transmission requests include service type and service data; The query verification unit is used to query configuration information related to the business type based on the business type, and to verify the data transmission request. The judgment unit is used to determine whether the configuration of the exit application in the configuration information is asynchronous after the verification is passed; The writing unit is configured to send the data transmission request to a message queue if the configuration of the exit application in the configuration information is asynchronous, convert the business data into the format required by the exit application, and select a processor component corresponding to the access method of the exit application to write the business data into the system of the exit application. The writing unit is further configured to, if the configuration of the exit application in the configuration information is not asynchronous, convert the service data into the format required by the exit application, and select a processor component corresponding to the access method of the exit application to write the service data into the system of the exit application.

[0014] Thirdly, the present invention provides an electronic device comprising a memory, a processor, and a transceiver sequentially and communicatively connected, wherein the memory is used to store a computer program, the transceiver is used to send and receive messages, and the processor is used to read the computer program and execute the data distribution method as described in the first aspect or any possible design of the first aspect.

[0015] Fourthly, the present invention provides a computer-readable storage medium storing instructions that, when executed on a computer, perform the data distribution method described in the first aspect or any possible design of the first aspect.

[0016] Fifthly, the present invention provides a computer program product comprising instructions that, when executed on a computer, cause the computer to perform a data distribution method as described in the first aspect or any possible design of the first aspect.

[0017] Beneficial effects: This invention receives a data transmission request from an upstream system, the request including a service type and service data. Based on the service type, it queries configuration information related to that service type and verifies the data transmission request. If the verification passes, it determines whether the configuration of the outgoing application in the configuration information is asynchronous. If the outgoing application is configured for asynchronous processing, the data transmission request is sent to a message queue, the service data is converted to the format required by the outgoing application, and a processor component corresponding to the access method of the outgoing application is selected to write the service data into the outgoing application's system. If the outgoing application is not configured for asynchronous processing, the service data is converted to the format required by the outgoing application, and a processor component corresponding to the access method of the outgoing application is selected to write the service data into the outgoing application's system. In this way, it can query configuration information related to the service type based on the service type, adapting to the dynamic changes in service requirements. It can also convert service data to the format required by the outgoing application, making it suitable for data transmission between systems with different data formats. This allows for rapid cross-system data transmission, facilitating practical application and promotion. Attached Figure Description

[0018] Figure 1 A flowchart illustrating the data distribution method provided in this application embodiment; Figure 2 A block diagram of a data distribution apparatus provided in an embodiment of this application; Figure 3 This is a block diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is for the purpose of helping to understand the present invention, but does not constitute a limitation of the present invention.

[0020] It should be understood that although the terms first, second, etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit, without departing from the scope of the exemplary embodiments of the invention.

[0021] It should be understood that the term "and / or" that may appear in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" that may appear in this document describes another relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " that may appear in this document generally indicates that the related objects before and after it are in an "or" relationship.

[0022] It should be understood that specific details are provided in the following description to facilitate a complete understanding of the exemplary embodiments. However, those skilled in the art will understand that the exemplary embodiments can be implemented without these specific details. For example, the system may be shown in block diagrams to avoid obscuring the example with unnecessary details. In other instances, well-known processes, structures, and techniques may be shown without unnecessary details to avoid obscuring the exemplary embodiments.

[0023] To enable rapid cross-system data transmission, embodiments of this application provide a data distribution method, apparatus, electronic device, and product. This data distribution method, apparatus, electronic device, and product can adapt to the dynamic changes in business needs and are applicable to data transmission between systems with different data formats, enabling rapid cross-system data transmission.

[0024] The data distribution method provided in this application can be applied to a data distribution server. It is understood that the described execution entity does not constitute a limitation on the embodiments of this application.

[0025] The data distribution method provided in the embodiments of this application will be described in detail below.

[0026] like Figure 1 The diagram shown is a flowchart of a data distribution method provided in the first aspect of an embodiment of this application. The data distribution method may include, but is not limited to, the following steps S101-S105.

[0027] Step S101. Receive data transmission request from the upstream system.

[0028] The upstream system can be one of the systems that sends a data transmission request to another system in a cross-system scenario, such as an e-commerce platform order system or a bank's online banking system. The data transmission request may include, but is not limited to, the access application number, business type, and business data.

[0029] The access application number can be a unique identifier used to identify the system sending data. The business type can be, but is not limited to, order status change, account information query, etc. The business data can be the specific data to be transmitted, such as order number, status, amount, etc., and its structure needs to be consistent with the business type data structure.

[0030] Step S102. Query the configuration information related to the business type based on the business type, and verify the data transmission request.

[0031] In one or more embodiments, upon receiving a data transmission request from an upstream system, the DataTransmission component can query configuration information related to the service type based on the service type. The configuration information related to the service type may include, but is not limited to, parameter structures, admission applications, exit applications, and / or routing configurations.

[0032] The parameter structure defines the format of business data, including field names, data types, lengths, etc. The admission application can specify which systems can send this type of data, and the exit application can specify which systems can receive this type of data. The routing configuration can be the data transmission path, such as the data transmission path to send data to the target system.

[0033] Verification of data transmission requests may include, but is not limited to, parameter verification, identity verification, duplicate verification, application verification, business type verification, business data verification, business type access and exit verification, and / or business type routing verification.

[0034] Parameter validation can verify that the data transmission request contains all required parameters, confirm that the parameter format meets expectations (e.g., data type, length, range), and check the validity of parameter values ​​(e.g., whether they are empty, whether they conform to business rules), ensuring that the data transmission request contains all necessary parameters in the correct format. Identity validation can use API keys, digital signatures, certificates, etc., to authenticate the system and check the sending system's permissions, ensuring it has the right to transmit data and preventing unauthorized access and data tampering. Duplicate validation can use unique identifiers (e.g., data transmission IDs) to record transmitted data and check whether newly transmitted data is duplicated, preventing duplicate data transmission and avoiding data redundancy and errors. Application validation can check whether the sending system (upstream system) and receiving system are in the configured access and exit application lists. Business type validation can check whether the business type is in the configured business type list and verify that the business type meets expectations. Business data validation can verify that the format of the business data conforms to the data structure defined by the business type and perform validity checks on the business data, such as data range and logical relationships. Service type admission and exit verification can check whether the sending and receiving systems are in the configured admission and exit application lists for a specific service type. Service type routing verification can check whether the routing configuration conforms to the routing rules of the service type and verify whether the routing configuration points to a valid target system.

[0035] Step S103. After the verification is passed, determine whether the configuration of the exit application in the configuration information is asynchronous.

[0036] In one or more embodiments, after successful verification, the matching approved applications can be added to the ICollection collection according to the routing configuration.<DataTransmissionRecord_OutApp> (It is a generic interface in the .NET Framework used to represent a collection of data transfer records, typically used to manage data transfer operation records of the application layer's OutApp), and loops through the collection to determine whether the outgoing application's configuration in the configuration information is asynchronous. This determination can be made based on the outgoing application's configuration information to determine if the outgoing application is asynchronous.

[0037] Asynchronous processing is a programming pattern that allows a program to continue performing other tasks while waiting for certain operations to complete. In asynchronous processing, the program delegates tasks to other system components (such as threads, processes, or event loops) and then returns immediately without waiting for the tasks to complete. When the tasks are complete, the program is notified and can then choose how to process the results. Asynchronous processing is commonly used for time-consuming operations, such as writing to a database or sending emails.

[0038] In one or more embodiments, a data transmission record may be created after the verification passes to record the details of the data transmission.

[0039] Step S104. If the configuration of the exit application in the configuration information is asynchronous processing, then send the data transmission request to the message queue, convert the business data into the format required by the exit application, and select the processor component corresponding to the access method of the exit application to write the business data into the system of the exit application.

[0040] The processor component corresponding to the access method of the access application can be an API processor (ApiHandler) component, a database processor (DBHandler) component, a gRPC processor (GrpcHandler) component, a message bus processor (MessageBusHandler) component, or a client agent processor (AgentClientHandler) component.

[0041] Step S105. If the configuration of the exit application in the configuration information is not asynchronous, convert the business data into the format required by the exit application, and select the processor component corresponding to the access method of the exit application to write the business data into the system of the exit application.

[0042] In one or more embodiments, the system that selects a processor component corresponding to the access method of the exit application to write service data into the exit application includes: selecting a processor component corresponding to the access method of the exit application and writing service data into the exit application based on the routing configuration in the configuration information.

[0043] In one or more embodiments, after the business data is written to the system of the exit application, the system can also receive the data transmission status and / or data execution status returned by the system of the exit application, and update the data transmission record based on the data transmission status and / or data execution status. Simultaneously, the data transmission status and / or data execution status recorded in the data transmission record can be returned to the upstream system.

[0044] In one or more embodiments, when writing business data to the system of the exit application, the business data can be encrypted first, and then the encrypted business data can be written to the system of the exit application to prevent data leakage and improve the security of data transmission between systems. The system for writing business data to the exit application may include, but is not limited to, the following steps S201-S208.

[0045] Step S201. Convert the business data into binary plaintext of a specified length.

[0046] Step S202. Perform an XOR operation between the initial key and the binary plaintext to obtain the preliminary encryption result G.

[0047] The specified length is the same as the length of the key used for encryption. For example, if the initial key is 64 bits long, then the length of the binary plaintext is also 64 bits.

[0048] Step S203. Sequentially divide the initial encryption result G into groups of four bits and convert them into decimal to obtain multiple decimal data Gi.

[0049] For example, if the initial encryption result G is 64 bits, then by dividing the initial encryption result G into groups of four bits and converting them into decimal, we can obtain 16 decimal data Gi.

[0050] Step S204. Map multiple decimal data Gi sequentially into a hash table using a hash function, and handle collisions using linear probing.

[0051] Because hash functions may experience collisions, linear probing is needed to handle them. A hash function can be represented as... H i =rH i ( D ), H i This represents the hash function after collision resolution. r Represents a pseudo-random function. H i ( D ) represents a hash address.

[0052] Step S205. Record the position of each decimal data Gi mapped in the hash table, and the number of probes Ci required to detect the position using linear probing.

[0053] Step S206. Using the DES algorithm, the initial key is expanded into multiple subkeys that are the same number of decimal data Gi and correspond one-to-one with each other. Based on the index of the subkey corresponding to each decimal data Gi and the number of probes Ci corresponding to each decimal data Gi, the new index of the subkey corresponding to each decimal data Gi is recalculated to obtain a new subkey sequence.

[0054] The index of any subkey can refer to the order of that subkey among multiple subkeys.

[0055] In one or more embodiments, the new index of the subkey corresponding to the decimal data Gi is A = (K × i + s) % N, where K represents the key length of the initial key, i represents the index of the subkey corresponding to the decimal data Gi, s represents the decimal data, and N represents the total number of subkeys. For example, if the key length of the initial key is 64 bits and the total number of subkeys is 16, then K is 64, N is 16, and % represents the modulo operation.

[0056] Step S207. Encrypt the business data based on the new subkey sequence to obtain encrypted business data.

[0057] In one or more embodiments, business data can be encrypted using the DES (Data Encryption Standard) algorithm.

[0058] Step S208. Write the encrypted business data into the system of the exit application.

[0059] In summary, the data distribution method provided by this invention receives a data transmission request from an upstream system, the request including a service type and service data; queries configuration information related to the service type based on the service type, and verifies the data transmission request; after successful verification, it determines whether the configuration of the outgoing application in the configuration information is asynchronous; if the outgoing application is configured for asynchronous processing, the data transmission request is sent to a message queue, the service data is converted into the format required by the outgoing application, and a processor component corresponding to the access method of the outgoing application is selected to write the service data into the outgoing application's system; if the outgoing application is not configured for asynchronous processing, the service data is converted into the format required by the outgoing application, and a processor component corresponding to the access method of the outgoing application is selected to write the service data into the outgoing application's system. Thus, it can query configuration information related to the service type based on the service type, adapting to the dynamic changes in service requirements, and can convert service data into the format required by the outgoing application. It is applicable to data transmission between systems with different data formats and can quickly achieve cross-system data transmission. Furthermore, when writing business data into the system of the exit application, the business data can be encrypted first using an improved encryption algorithm before being written into the system of the exit application. This prevents data leakage, improves the security of data transmission between systems, and facilitates practical application and promotion.

[0060] Please see Figure 2 The second aspect of this application provides a data distribution apparatus, which includes: A receiving unit is used to receive data transmission requests from an upstream system, wherein the data transmission requests include service type and service data; The query verification unit is used to query configuration information related to the business type based on the business type, and to verify the data transmission request. The judgment unit is used to determine whether the configuration of the exit application in the configuration information is asynchronous after the verification is passed; The writing unit is configured to send the data transmission request to a message queue if the configuration of the exit application in the configuration information is asynchronous, convert the business data into the format required by the exit application, and select a processor component corresponding to the access method of the exit application to write the business data into the system of the exit application. The writing unit is further configured to, if the configuration of the exit application in the configuration information is not asynchronous, convert the service data into the format required by the exit application, and select a processor component corresponding to the access method of the exit application to write the service data into the system of the exit application.

[0061] The working process, working details and technical effects of the data distribution device provided in the second aspect of this embodiment can be found in the first aspect of the embodiment, and will not be repeated here.

[0062] Please see Figure 3 The third aspect of this application provides an electronic device, including a memory, a processor, and a transceiver that are sequentially and communicatively connected, wherein the memory is used to store a computer program, the transceiver is used to send and receive messages, and the processor is used to read the computer program and execute the data distribution method as described in the first aspect of the application.

[0063] Specifically, the memory may include, but is not limited to, random access memory (RAM), read-only memory (ROM), flash memory, first-in-first-out (FIFO) memory, and / or last-in-first-out (FILO) memory, etc.; the processor may not be limited to microprocessors of the STM32F105 series, ARM (Advanced RISC Machines), x86 architecture processors, or processors with integrated NPU (neural-network processing units); the transceiver may be, but is not limited to, WiFi (Wireless Fidelity) wireless transceivers, Bluetooth wireless transceivers, General Packet Radio Service (GPRS) wireless transceivers, ZigBee (a low-power LAN protocol based on the IEEE 802.15.4 standard), 3G transceivers, 4G transceivers, and / or 5G transceivers, etc.

[0064] This fourth aspect of the embodiment provides a computer-readable storage medium storing instructions comprising the data distribution method described in the first aspect of the embodiment. Specifically, the computer-readable storage medium stores instructions that, when executed on a computer, perform the data distribution method as described in the first aspect. The computer-readable storage medium refers to a carrier for storing data, and may include, but is not limited to, floppy disks, optical disks, hard disks, flash memory, USB flash drives, and / or Memory Sticks. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.

[0065] The fifth aspect of this embodiment provides a computer program product containing instructions that, when executed on a computer, cause the computer to perform the data distribution method as described in the first aspect of the embodiment, wherein the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.

[0066] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A data distribution method, characterized in that, include: Receive a data transmission request from the upstream system, the data transmission request including the service type and service data; Based on the business type, query the configuration information related to the business type, and verify the data transmission request; After the verification is passed, it is determined whether the configuration of the exit application in the configuration information is asynchronous; If the configuration of the exit application in the configuration information is asynchronous, the data transmission request is sent to the message queue, the business data is converted into the format required by the exit application, and the processor component corresponding to the access method of the exit application is selected to write the business data into the system of the exit application. If the configuration of the exit application in the configuration information is not asynchronous, the business data is converted into the format required by the exit application, and the processor component corresponding to the access method of the exit application is selected to write the business data into the system of the exit application.

2. The data distribution method according to claim 1, characterized in that, The method further includes: Create a data transfer record after successful verification; After writing the business data into the system of the exit application, the method further includes: Receive the data transmission status and data execution status returned by the system of the application to be approved, and update the data transmission record based on the data transmission status and data execution status.

3. The data distribution method according to claim 1, characterized in that, The configuration information related to the service type includes parameter structure, admission application, exit application and / or routing configuration; The verification types for verifying the data transmission request include parameter verification, identity verification, duplicate verification, application verification, service type verification, service data verification, service type access and exit verification, and / or service type routing verification.

4. The data distribution method according to claim 1, characterized in that, The system that selects a processor component corresponding to the access method of the exit application to write the service data into the exit application includes: Select the processor component corresponding to the access method of the exit application, and write the service data into the system of the exit application based on the routing configuration in the configuration information.

5. The data distribution method according to claim 1, characterized in that, The processor component corresponding to the access method of the access application is an API processor component, a database processor component, a gRPC processor component, a message bus processor component, or a client proxy processor component.

6. The data distribution method according to claim 1, characterized in that, The system that writes the business data into the exit application includes: Convert the business data into binary plaintext of a specified length; The initial key is XORed with the binary plaintext to obtain the preliminary encryption result G; The initial encryption result G is divided into groups of four bits and then converted to decimal to obtain multiple decimal data Gi; Multiple decimal data Gi are sequentially mapped into a hash table using a hash function, and collisions are handled using linear probing. Record the position of each decimal data Gi in the hash table, and the number of probes Ci required to detect the position using linear probing; The initial key is expanded into multiple subkeys with the same number of decimal data Gi and corresponding one-to-one with each other using the DES algorithm. Based on the index of the subkey corresponding to each decimal data Gi and the number of probes Ci corresponding to each decimal data Gi, the new index of the subkey corresponding to each decimal data Gi is recalculated to obtain a new subkey sequence. The business data is encrypted based on the new subkey sequence to obtain encrypted business data. The encrypted business data is written into the system of the exit application.

7. The data distribution method according to claim 6, characterized in that, The new index of the subkey corresponding to the decimal data Gi is A=(K×i+s)%N, where K represents the key length of the initial key, i represents the index of the subkey corresponding to the decimal data Gi, s represents the decimal data, N represents the total number of subkeys, and % represents the modulo operation.

8. A data distribution device, characterized in that, include: A receiving unit is used to receive data transmission requests from an upstream system, wherein the data transmission requests include service type and service data; The query verification unit is used to query configuration information related to the business type based on the business type, and to verify the data transmission request. The judgment unit is used to determine whether the configuration of the exit application in the configuration information is asynchronous after the verification is passed; The writing unit is configured to send the data transmission request to a message queue if the configuration of the exit application in the configuration information is asynchronous, convert the business data into the format required by the exit application, and select a processor component corresponding to the access method of the exit application to write the business data into the system of the exit application. The writing unit is further configured to, if the configuration of the exit application in the configuration information is not asynchronous, convert the service data into the format required by the exit application, and select a processor component corresponding to the access method of the exit application to write the service data into the system of the exit application.

9. An electronic device, characterized in that, The device includes a memory, a processor, and a transceiver that are sequentially and communicatively connected, wherein the memory is used to store a computer program, the transceiver is used to send and receive messages, and the processor is used to read the computer program and execute the data distribution method as described in any one of claims 1 to 7.

10. A computer program product, comprising a computer program or instructions, characterized in that, When the computer program or the instructions are executed by the computer, they implement the data distribution method as described in any one of claims 1 to 7.

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