Semantic model for Complex object in Object oriented database

Abstract

Abstract OODBMS is a collection of objects. The objects are classified into classes and instances. The objects encapsulate the attributes and associated methods or member functions. The support of complex objects forces a few necessities. They ought to support basic structural modeling and interrelationship normally. The evolution of objects must have elements with the end goal that a transaction can reach out in time and requires the complex recovery and concurrency control systems. Because of the evolutionary nature way of uses, expansion of domain change operations ought to be supported without block or shutdown system alongside the execution of data request and with security systems. The support of complex objects imposes several requirements. As changes are constant for object as well as schema, that means change in classes, their relationship and even class lattice. This will affect not only stored objects as well as creation of new objects in database too. Previous research has some shortcomings. while retaining the advantages of the previous, more limited model presents the extended semantics of composite objects. To eliminate shortcoming, we are presenting dynamic model for applications to meet complex requirements.