May 2017
Intermediate to advanced
442 pages
11h 55m
English
EDTs can also extend other EDTs; although, these child EDTs can only affect appearance properties. This is useful when we want to enforce physical storage attributes of a range of types, but have a different label depending on context. If we change the size of a base EDT, all EDTs that extend it will be affected and, consequently, all of the fields that are based on them.
We often extend specific EDTs when creating an EDT for certain types of fields.
The typical EDTs we used for this are as shown in the following table:
|
EDT |
Type |
Size |
Reason |
|
SysGroup |
String |
10 |
This is used for the primary key fields for group tables. Group tables are those used for backing tables for drop-down lists. They may provide further ... |
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