FileMaker Pro 4.1 Mac User's Guide

10-14 FileMaker Pro User’s Guide
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Keep these points in mind:
1 You can define a relationship for a lookup when you define the
lookup. See the previous section.
1 To change a relationship, see “Changing relationships” on page
10-29.
Updating lookup values
If you change data in the match field of the related file or in the lookup
source field, FileMaker Pro doesn’t automatically update the data in the
lookup destination field. To update the data, you need to look it up again.
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Working with relational databases
Choose FileMaker Help Index from the or Help menu, and then type:
E lookups, defining
Important You can’t undo your actions when you update lookup values.
1. In the master file, locate the records that contain the values to update.
If necessary, find or omit records first. (See “Finding information” on
page 4-19 and “Omitting records” on page 4-26.)
2. Select the match field in the current file, and then choose Relookup
from the Mode menu.
3. When you see an alert message, click OK.
To define a script to update lookup values automatically, see chapter 5,
“Using ScriptMaker and buttons.”
Choose FileMaker Help Index from the or Help menu, and then type:
E lookups, updating
The rest of this chapter explains how to plan, create, and work with
relational databases.
Important Before you begin, be sure you understand the information in
the previous sections that explain relational databases and how they
differ from lookups.