PL/SQL Collections and Records
Josh Juneau, Matt Arena · Apress eBooks · 2010
Collections are single-dimensional arrays of data all with the same datatype and are accessed by an index; usually the index is a number, but it can be a string. Collections indexed by strings are commonly known as hash arrays . These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.