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Data synchronization method and data synchronization system

A data synchronization and non-synchronization technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of increasing storage requirements, reducing synchronization efficiency, and low efficiency, so as to save comparative computing resources and improve synchronization efficiency effect

Inactive Publication Date: 2009-10-07
IBM CORP
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  • Abstract
  • Description
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Problems solved by technology

The problem with this is that in most cases only some of the columns in the row are updated, but in the case of limited bandwidth, the columns that have not changed will also be sent out
However, this method has two main disadvantages. One is that it takes a lot of time to compare the existing data with the original data in real time during synchronization, which increases the synchronization delay and reduces the synchronization efficiency; the other is that additional maintenance is required on each computer that needs to be synchronized. A copy of the data from the last sync, adding significant storage requirements
So the efficiency of this incremental data synchronization method is a traditional inefficient method

Method used

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  • Data synchronization method and data synchronization system
  • Data synchronization method and data synchronization system
  • Data synchronization method and data synchronization system

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Embodiment Construction

[0030] The data synchronization method and system of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] The data synchronization method of the present invention relates to data records stored in any storage medium, and the data records include a plurality of fields representing attributes and characteristics of the data records. According to the data record of the present invention, some attribute or feature can be used to uniquely identify, for example, a field can be created in the data record, and the value of this field is a unique numerical value (such as a time stamp) of some form, and this numerical value can be used to uniquely identify data record.

[0032] refer to figure 1 Describe the method for data synchronization according to the present invention, in step 101, record the change history of data records when not synchronized; in step 102, merge the change history of the data records in response to the sy...

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Abstract

The invention discloses a data synchronization method and a data synchronization system. The data synchronization method comprises the following steps: recording data change histories in the case of asynchrony; responding to a received synchronization request and combining the recorded data change histories; and sending the combination result. The invention combines the recorded data combination history through a high-efficient combination method, and sends changed fields respectively from one terminal to another terminal, thereby improving the synchronization efficiency.

Description

field of invention [0001] The present invention relates to a method and system for data synchronization, in particular to a method and system for incremental data synchronization. Background of the invention [0002] In recent years, with the widespread use of various mobile devices (such as smart phones, personal digital assistants, laptops, etc.), mobile office workers abound in airports, high-end office buildings, libraries, restaurants or cafes. The user of the mobile device can actually be a client of the system server. The on-site data obtained by the client needs to be synchronized with the system server database. When there are multiple copies of the data, these copies need to be consistent. Once disconnected, Both the server and each client can modify their own data. In order to obtain data consistency, a connection must be established and each client must be synchronized with the server. Database synchronization technology can realize data exchange between differ...

Claims

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Application Information

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IPC IPC(8): G06F17/30
Inventor 齐亮
Owner IBM CORP
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