a numeric value that Access maintains and automatically increments each time you add a new record to a table

A unique number automatically created for each record as you add that record to the database; Access can create sequential, random, or Replication ID numbers.

A type of data domain where the DBMS automatically assigns a unique identification number for each new row of data.Useful for generating primary keys.

A unique number associated with the prefix of each component in the Interleaf desktop publishing software. Because each autonumber has a unique value, these numbers are used to create references to their components elsewhere in the text. In hardcopy, an autonumber can be used to create a page reference that renumbers automatically as its associated component moves to a different page. In hypertext, autonumbers are used to create the hypertext links that jump to the corresponding component. For the ordered-list item component and the figure caption component, the autonumbers are visible and are used to number a series of these items in the proper order.

An Access data type that automatically increments by one for every new record. This data type replaced Counter in Access 1.x and 2.0. AutoNumber fields are usually mostly for primary keys.