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78 results about "Connection string" patented technology

In computing, a connection string is a string that specifies information about a data source and the means of connecting to it. It is passed in code to an underlying driver or provider in order to initiate the connection. Whilst commonly used for a database connection, the data source could also be a spreadsheet or text file.

Unique session storage design

A system and method for providing user session state across various networked machines is disclosed. The system encompasses a session saver and a sessions database centrally maintained for access by a plurality of computing devices. The system indexes each stored variant by a user defined key and a descriptive variable name. The session saver is a drop in replacement for the IIS session object that provides session state without using cookies. The session saver is divided into various subcomponents, including Csaver for providing the COM interface, OleDbSessionTable to read and write the data from an OLE database, Cconnection for retrieving a connection string from a UDL file, RegistryInfo that reads the location of the UDL file from the memory, StorageVariant enabling storage of variants in any properly configured OLE DB provider, and CcomVariantEx. Any of the operations servers generates a session key when initially contacted by the user and the session saver stores the session key and variables associated with the particular session, such as account numbers, passwords accepted, and so forth. These session keys and stored variables are available to any of the other operations servers and a procedure for retrieving these keys and variables is performed each time a session is either commenced or resumed. Each generated session key is unique and non predictable such that multiple operation servers can simultaneously generate keys without conflict.
Owner:SENSCOM

Database configuration file encapsulation method and operation method as well as operation device thereof

The invention discloses a database configuration file encapsulation method and an operation method as well as an operation device thereof. The encapsulation method comprises the following steps that the types and the connection character strings of one or a plurality of databases are obtained; entities are obtained from one or a plurality of applications, and in addition, the relationship between the attribute of each entity and the data table of each database is determined; the types and the connection character strings of the databases, and the relationship between the attribute of each entity and the data table of each database are encapsulated in one configuration file. The invention also discloses the operation method using the configuration file, and the operation device using the configuration file and the operation method. The encapsulation method, the operation method and the operation device have the advantages that through the configuration file, in the coding process, the operation on the databases is respectively carried out in an object mode, and the database operation method is simplified, so the development efficiency is improved, and the software development cost and the operation and maintenance cost are reduced.
Owner:SHANGHAI CTRIP COMMERCE CO LTD

Method for zero-modification migration of application program under heterogeneous database platforms

The invention discloses a method for the zero-modification migration of an application program under heterogeneous database platforms. An architecture of the method comprises a server side and a client side; the server side consists of two compatible heterogeneous database platforms which are respectively called an original database platform and a new database platform, and the compatibility of the database platforms comprises data types and SQL (Structured Query Language) sentences; the client side consists of the application program and an application program loader, and the application program accesses the database platforms by using an ADO (ActiveX Data Objects) and OLE DB (Object Linking and Embedding Database) mode and is connected with the database platforms by using an ADO and OLEDB connection character string; and the application program loader starts the application program, searches from a memory, replaces a database connection character string of the application program, and closes the running of the application program. According to the method for the zero-modification migration of the application program under the heterogeneous database platforms, the seamless migration and switchover between the two database platforms can be achieved, the workload for application program migration is greatly reduced, and the human, material and financial resources are saved.
Owner:PLA UNIV OF SCI & TECH

Independent microgrid system design method based on universal gravitation algorithm

The invention provides an independent microgrid system design method based on a universal gravitation algorithm. The independent microgrid system design method comprises the following steps of S1, establishing an independent microgrid system model with a multi-objective evaluation index; S2, converting the independent microgrid system model with the multi-objective evaluation index into an independent microgrid system model with a single-objective evaluation index; S3, taking accessible draught fan number Num<wt>, parallel-connection string number Num<pv> of photovoltaic cell arrays, and parallel-connection string number Num<bat> of storage batteries as optimization variables; S4, determining an operational control strategy of the independent microgrid system, preferably considering renewable energy generating capacity to satisfy load requirement, and determining charging-discharging states of the storage batteries and the starting and stopping of a diesel generator according to a difference value between the renewable energy generating capacity and the required electric quantity of the load; and S5, solving the independent microgrid system model by the universal gravitation algorithm. The independent microgrid system designed by the design method has the advantages of high economical efficiency, high environment-friendliness, high renewable energy utilization, high power supply safety and reliability, and the like.
Owner:STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST +1

Trigger type fishing device

ActiveCN109349244ASustained and effective fish gatheringImprove fishing efficiencyLinesOther angling devicesEngineeringSupport plane
The invention discloses a trigger type fishing device, and aims to achieve the technical purposes that by means of the trigger type fishing device, fishes can be continuously effectively gathered in afishing area, fishes on a hook can be automatically caught, and therefore, the fishing efficiency is improved. The trigger type fishing device comprises a supporting frame, a horizontal hanging plate, a trigger type fishing device body and an intermittent feeding type fish gathering mechanism, wherein the horizontal hanging plate, the trigger type fishing device body and the intermittent feedingtype fish gathering mechanism are arranged on the supporting frame. The trigger type fishing device body comprises an elastic connection string, a hanging rod and a fishing line which are sequentiallydistributed from top to bottom. The intermittent feeding type fish gathering mechanism comprises a storage cylinder, a sleeve, a ratchet wheel, a swing rod, a ratchet, a vertical guide sleeve, a driving guide rod, a connecting rod and a floating frame, wherein the storage cylinder is arranged on the supporting frame and used for storing fish gathering baits, the storage cylinder is sleeved with the sleeve which can rotate around the storage cylinder, the ratchet wheel is arranged on the sleeve, the swing rod is rotationally arranged on the storage cylinder through a shaft rod, the ratchet isarranged on the swing rod and matched with the ratchet wheel, the vertical guide sleeve is arranged on the supporting frame, the driving guide rod is slidably arranged in the vertical guide sleeve, the connecting rod is connected with the driving guide rod and the swing rod, and the floating frame is arranged below the storage cylinder.
Owner:MARINE FISHERIES RES INST OF ZHEJIANG

Method and system for transmitting archived logs and medium

The invention discloses a method for transmitting an archived log. The method comprises the following steps of: configuring a first directory parameter and configuring an address for storing the archived log in a main node; configuring a second directory parameter and configuring an address for backing up the archiving log in the slave node; establishing a connection string parameter through the second directory parameter, and establishing a first network between the master node and the slave node; the master node backing up the archived log to the slave node through the first network; monitoring the connection state of the first network, wherein if the first network is connected abnormally, the IP of the slave node is displayed, and the transmission network is switched, in this way, the archiving transmission network can be established through the idle network card, additional independent configuration monitoring is not needed, the configuration amount and the maintenance amount are reduced, and the efficiency is improved. According to the technical scheme of the invention, the influence on the bandwidth of the service network when the archiving log is transmitted between the main library and the standby library by the DATAGUARD function is reduced, and the service network can be switched to transmit the archiving log when the transmission network fails.
Owner:SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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