ER/Studio - Embarcadero Technologies Product Documentation

USING ER/STUDIO > DEVELOPING THE PHYSICAL MODEL
3 Right-click one of the selected tables, then from the pop-up menu select Denormalization Mapping >
Rolldowns.
4 Complete the Roll Down Denormalization Wizard as required.
Notes
• If the Rolldowns menu choice is dimmed, check to make sure you have not accidentally selected another table or
some other object.
• The first panel of the wizard is merely informative. If the correct tables are listed, click Next; otherwise, click
Cancel and redo your selection.
• If appropriate, the denormalized child tables can be further consolidated via a Table Merge Denormalization.
Partitioning a Table and Duplicating Columns
Horizontal Split Denormalization
A horizontal split denormalization mapping partitions a table into two or more tables with identical columns. In the
following example, a single discounts table is split into three separate tables.
before
after
EMBARCADERO TECHNOLOGIES > ER/STUDIO® 8.0.3 USER GUIDE 214