Oracle SQL & PL/SQL

An Object is a reusable application component that developers need to be aware of, rather than how it works. Object are basic entities in a system. They could represent a person, place, bank account, or any item that is handled by program. Every object consists of an attribute and one or more methods. An attribute could be any property of the object. Class:           It is a collection of attributes and functions (method) to plan the object. Object Table : ·    Object table are created by using the user defined data types. ·        In an object table each row or record is treated as an object. ·        Each row in an object table has an object Identified (OID), which is unique through out       the   database. ·       The rows or objects of an object table can be referenced by other objects with in the  database. ·    ...