A Collection is an ordered group of elements, all of the same type. Each
element has a unique subscript, called an index, that determines its position in the
collection. A Collection can be subdivided into following types.
· Nested table type, viewed as a table stored in the column of a database table.
When retrieved, the rows of a Nested Table are given consecutive subscripts
starting at 1 and individual rows are accessed using array-like access.
· VARRAY type, viewed as an array stored in the column of a database table. To
reference an element in VARRAY, standard subscripting syntax can be used. For
example, Grade(3) references the third element in VARRAY Grades. See Creating a VARRAY Collection Type.
Note: An OraCollection element index starts at 1.
In Oracle Objects for OLE, Oracle Collection type is represented by the OraCollection interface. The following topics provide more information:
·Retrieving a Collection Type Instance from the Database
·Accessing Collection Elements
·Modifying Collection Elements
