What Do You Know Object Oriented Database Systems? Describe Relationship Between DBMS & Application Program?

In the middle of 1980s, it had become clear that there were several fields where relational databases were not applicable, due to the types of data involved. These included medicine, multimedia and high-energy physics, all of which needed more flexibility in how their data was represented and accessed. This led to research being started in object-oriented databases where users could define their own methods of access to data and how it was represented and manipulated. In the start of 1990s, two systems had appeared: the Object-Oriented DBMS (OODBMS) and the object-relational DBMS (ORDBMS). However, unlike previous models, the actual composition of these models is not clear. This evolution presents third generation DBMS.

RELATIONSHIP BETWEEN DBMS AND APPLICATION PROGRAM:
There is very close relationship between DBMS and application program. The application program provides the user-interface to send requests to DBMS and to receive processed results from DBMS. The DBMS processes the requests and returns the results to the application program and also controls and manages the database.

In most of the DBMSs, application programs are used for interfacing with database. The user communicates with the data system through the user-interface part of the application program. The application program is developed according to the requirements of users. The application programmer must have the complete knowledge aouut DBMS and databases used in it. Then he can easily develop the application program. The application program provides an easy and user-friendly user-interface to access the database.

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