The Research Of Isomeruous,Database's General Systems

With the development of the societal information, information management systems appeared newer, there were all kinds of different configuration database management systems, and their functions were more powerful. For including important historical data, or not being modified, the old data sources weren abandoned simply. So problems about interisiting data was certainly appeared or the association of the different configuration, new and old information sources. I-low to connect the different databases equitably in reorganizing the current sources justly and combining them newly, this was the databases?isomerous problem that we must solve.The databases?isomerous problem caused many databases manufacturers and specialist attentions. They put forward all kinds of solutions. Nowadays there were some main strategies on integrating isomerous data. They were common transformation interface (CAPI), common gateway (Gateway) and common agreement that were based on client. Among them the integration method on common transformation interface was used popularly.Based on the method above and the fact that PowerBuilder and Delphi both could connect a lot of database systems, the article preferred a plan that used PowerBuilder as proscenium developing tool to materialize random isomerous databases?data transformation. In the course two data transformation skills were used, they were witching the data from the source database to the target database through the middle database?and sing two middle variables that connected the source database and the target database partly? The system had quite good general effect.In the fifth chapter of the article, the data transformation methods were mainly debated that data of dbf kind, db kind, SQL Server kind and Oracle kind could be transformed using Delphi data controller. The methods possessed certain reference value to integrate the isomerous data. Lastly the article advanced the way to transform data from the pure text documentation to the dbf kind database and the way to build the database construction dynamic. The two methods were convenient for the user to manager the data and then archived the target of general using.