Object-Relational Data Model in Database
- Features of both Object oriented data model and Relational Data Model.
- Retain the core-relational foundation of the relational model :- Declarative access to data
- Collection types and Object orientation
Object-Relational Data Model incorporate the features of the object oriented data model and relational data model. Object-Relational Data Model retain the core-relational foundation of the relational model -that is the declarative access to data. It extend the relational data model by providing collection types and object orientation. Object orientation provides inheritance. Collection types include nested relations,sets,multisets and arrays. The object relational model allows attributes of a table to be collections.