What You Should Know to Use This Guide

Knowledge of TSO/ISPF and tableBASE aids in the understanding of this document.

The following terms are used throughout this guide. Descriptions are provided to make them more familiar.



Data Table

The raw data. Each Data Table has a table definition (DT-BLOCK) that is used to generate the Index for the Data Table. Also referred to as a base or primary table.


An Index is defined for each Data Table. A Data Table Index is generated dynamically when a table is opened based on the information in the table definition (DT-BLOCK).

Alternate Index

An Alternate Index is an Index that may be defined for a Data Table. The Alternate Index has a table definition (ALT-DEFINITION) that defines the key, organization, and search order. Each Data Table may have as many Alternate Indexes as desired or none.

Delivered defaults

Refer to the defaults that are delivered with the product.

Installation defaults

Refer to the defaults set at installation time, which may or may not be the same as the delivered defaults.

In addition, tablesONLINE uses these terms:




A View provides the field, edit, and display attributes for a Data Table with its Index. Referred to in previous releases as a Field Definition Table (FDT).

Alternate Index View

An Alternate Index View is identical to a View but applies to a Data Table with its Alternate Index.