See O-R mapping and object database. There are three major features in object-oriented programming that makes them different than non-OOP languages: encapsulation, inheritance and polymorphism.

object oriented programming (OOP). In the first article, we covered the basics of the class data type and the history of OOP. This article uses examples to explain how to efficiently and correctly use ...

An introduction to the principles of object-oriented programming. It covers both object-oriented programming techniques and their application to program design including classes, objects and objects ...