Database Reference
In-Depth Information
Figure 7.29. The new subset table structures
Take a moment to review your table structures once more. You may discover that you've
created subset tables without knowing it. Tables that have
almost
identical structures are
commonly subset tables; there are usually only a few unique fields that distinguish one
table from the other. For example, consider the two partial table structures in
Figure 7.30
.
Each table represents a distinct aspect of the
same
subject.
