(1) A set of pointers that is logically ordered by the values of a key. Indexes provide quick access to data and can enforce uniqueness of the key values for the rows in the table.
(2) A computer storage position or register, the contents of which identify a particular element in a table.
(3) In VisualAge RPG, the identifier of an entry in a part, such as a list box or a combination box.
(4) A table that contains key values or referrences for locating information in an indexed file.
(5) In the WebSphere MQ Administration Interface (MQAI), a means of referencing data items.
(6) A relative number (1-64) of an image catalog entry within an image catalog.
(7) A list of entries arranged alphabetically to provide fast access to information.
(8) To add or edit the attribute values that identify a specific item or object so that it can be retrieved later.