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Introduction to Database Systems by ITL Education Solutions Limited

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CHAPTER 16

OBJECT-BASED DATABASES

After reading this chapter, the reader will understand:

  • The need for object-based databases
  • Two streams of object-based databases, that are object-relational and object-oriented databases
  • Extension of SQL to support complex data types and object-oriented features, such as inheritance
  • Defining structured data types using row and array type constructors
  • Defining methods on the structured types
  • The concept of type inheritance and table inheritance The concept of object identifier (OID) and reference types in SQL
  • Characteristics of object-oriented databases including persistence and versioning
  • The standard model of OODBMS, that is, the ODMG object model
  • Various concepts and technologies related to object model, ...

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