Overview

This section shows the key features of restructure mechanism.

The restructure mechanism has the following features:

• Convert data records based on specific actions and criteria defined in a limited framework
• Brings data from old release format to upgraded release format
• Changes only data values
• Position remains same
• Might also involve changing key of the record
• Can result in splitting of the record in same table
• Can also result in removing few records

Advantages

• Does not process millions of live and history records
• Does restructuring of data items in a temporary table space without disturbing live production system
• Helps to facilitate shorter upgrade period

Disadvantages

• Applicable for the data in live file by default
• Applicable for history file data ($HIS), if INCLUDE.HISTORY is enabled in corresponding restructure definition record in T24.TABLE.RESTRUCTURE
• Unauthorized file ($NAU) is not focused as part of restructure process
• $DEL file data restructure is not in focus as it is not part of business and also the deleted image can be retained as it is