Data Subset Extraction Guide

Outlines the concepts and procedures used by the Data Subset Extraction module. Data Subset Extraction uses selection criteria specified by the user to create a new test environment from an existing environment.

Data Subset Extraction can be used to:

Generate an integral test environment.
Generate a reduced test environment.
Generate a test environment with data migration.
Generate a test environment while applying data masking techniques (for example, to protect sensitive data).

Data Subset Extraction processing comprises the following elements:

Methods creation that generates a test environment from the client side.
Extraction job submission from the client side.

To process an environment using Data Subset Extraction for the Data Express for z/OS solution, all the files belonging to the environment undergo the following steps:

Loading and analysis of the application copybooks.
Loading and analysis of data stores.
Data store/copybook automatic association.
Definition and association of selection classes with copybooks.
Identification of register table data stores.

For more information, see the Front End Guide.