§ 1581. Definitions. For purposes of this article:

1. "Data file" means the compilation of assessment information used in the preparation of assessment rolls, tax rolls, tax bills or any combination thereof, in a system of real property tax administration which employs electronic data processing equipment.

2. "Electronic data processing" means the use of the computer for operations which include the storing, retrieving, sorting, merging, calculating and reporting of data.

3. "Machine readable" means information in a form legible through the use of mechanical devices.

4. "Posted tax roll" means a tax roll including the date of payment of a tax, any receipt number and related information.