Hi,
There are several collection types:
- varray is like an array in other languages.
- nested tables is like lists in other languages (no fixed limit, can be sparse)
- associative arrays are like hash lists in other languages (a collection of key-value)
Everything is here:
http://download.oracle.com/docs/cd/B10501_01/appdev.920/a96624/05_colls.htmRegards,
Franck.