The implement method of distributed database s synchronous updating;

Study on mechanism of synchronous updating for railway public basic coding based on Web services;

Firstly this paper introduces a drawing method based on the SDI application and the implementation of the split windows’ synchronous update,and then it expatiates how to improve the update efficiency of split windows step by step by an instance.

This paper provides a discussion on the theory of distributed database, and then puts forward a synchronous update system model to solve the problems encountered while Lushun Insurance Company was realizing the data share among different kind of databases located in different area.

Ant colony optimization algorithm based on asynchronous update of pheromone;

The Research on Asynchronous Update Model of Spatial Data Based on Object Relational Database;

The update part of the two vectors is determined by the larger part of the input correlation, and then the asynchronous update of the weight vector, finally becomes optimal.

First distributed database systems for a simple, on this basis, further analysis of the simultaneous upgrading of technology, mainly for data replication conducted in-depth discussions that as a proposal, the realization of the enterprise database synchronization update.

The paper introduces a method of database synchronization update towards the SGAP connecting network.

A “progressive updating”method of large scale displacement measurement is proposed to avoid the defect of low correlation coefficient caused by large scale displacement.