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Associated transaction processing method of mobile database

A mobile database and transaction processing technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve the problems of high number of rollbacks and affecting system execution efficiency, etc., achieve stable operation speed, save storage space, and save communication The effect of times

Inactive Publication Date: 2008-05-21
BEIHANG UNIV
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  • Application Information

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Problems solved by technology

This synchronization granularity satisfies atomicity, but the number of rollbacks is large, which affects system execution efficiency

Method used

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  • Associated transaction processing method of mobile database
  • Associated transaction processing method of mobile database
  • Associated transaction processing method of mobile database

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Embodiment Construction

[0043] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0044] The invention is a method for processing associated transactions of a mobile database. In order to solve the replica inconsistency caused by optimistic replication, and the existing transaction processing method affects the practicability and scalability of the system. It adopts related transaction division algorithm, related transaction conflict processing algorithm and other technical means.

[0045] The mobile computing environment is different from the traditional distributed computing environment. The traditional distributed computing environment has the following assumptions: the location of the host is fixed, the address information of the host is known, each node maintains a persistent connection through a fixed network, network communication satisfies symmetry, and so on. In mobile computing systems, the above assumptions no longer h...

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Abstract

The invention discloses a processing method of association transaction in mobile database, which adopts technical means such as association transaction division algorithm and association transaction conflict resolution algorithm. Association transaction is used as a fundamental granularity of data synchronization and mobile terminal merges the resultset according to associativity between transactions. Association transaction division algorithm and association transaction conflict resolution algorithm are adopted to deal with the resultset, as a result, the terminal enables synchronous process by only uploading association transaction operation results and corresponding timestamp. The invention has the advantages that the transaction processing process ensures transaction execution validity, serializability and atomicity, which reduces system outgoings on time and space and rollback times of error transaction, quickens system response time, and enables system running speed to be steadier and rapider with good practicability and expandability.

Description

technical field [0001] The invention belongs to the field of mobile computing and relates to a transaction processing method, in particular to a method for processing associated transaction conflicts in a mobile database. Background technique [0002] The development of wireless network technology and portable devices, as well as the combination of these two technologies, has produced a new computing field called mobile computing (Mobile Computing). In a mobile computing environment, users carrying portable information devices can access required information services through a shared infrastructure network facility, regardless of their physical location or state of motion. [0003] Transactions issued by mobile clients are called mobile transactions. The mobile transaction is actually a distributed transaction, in which part of the computing work is completed on the client computer, while other parts are handed over to the fixed node (server) to complete. Mobile transactio...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L12/56
Inventor 牛建伟张晓丹
Owner BEIHANG UNIV
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