Hi Prateek, Hope you know Object oriented programming. Which means beofre start programming, we identify the objetcs in the problem and find a solution based on these objects. So when we add database capabilities with OOP, the result is ODBMS. It helps you to repersent data in the form of objects as in OOP model. This is only a simple explaination. If you want more details you can search on the web. You will find a plenty of good articles. If you find this post useful pls accept my answer. :)