The DP4 database management system
includes a set of development tools and a runtime program called
the database manager. This is a component that handles the storage
of data and retrieves data when it is requested by an
application. The DP4 database management system
includes a set of development tools and a runtime program called
the database manager. This is a component that handles the storage
of data and retrieves data when it is requested by an
application.
The DP4 database manager provides an interface between your application program and the database. Your application program does not need to know how the data is stored on disk in order to access and change the information on the database. It is possible to extend or even completely replace the database manager with components that access data over a network or from another database management system such as Oracle.
The following topics have more information about the core DP4 database manager: