Advanced Database Management System - Tutorials and Notes: Collection Types in Object database systems

Friday, 21 April 2017

Collection Types in Object database systems

Collection types in object relational database systems, Collection types VARRAY, Nested Tables, and Associative Arrays in Oracle


Collection Types

A collection is an ordered group of elements of same type. The purpose of collection type is to support multiple values for one attribute [variable]. For example, other programming languages support the collection types array, lists, sets, bags, trees etc. To extend these features in database applications, PL/SQL provides the following collection types;


  • Associative Arrays

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