A Survey of Data Integration

With the continuous development of enterprises, it is difficult for all departments within an enterprise to avoid the phenomenon of "isolated islands of information" resulting from the distribution of data in various departments and the different ways of data management. The task of data integration is to integrate data from interdependent, autonomous, and heterogeneous data sources and provide users with a common query interface that enables users to access the data transparently. Instead of accessing the data source directly, the user submits the required query to the integrated system, which returns the consistent query result.