Datasheet

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Chapter 1 ✦ What Is a Database?
Figure 1-4: A custom layout.
Figure 1-5: Layouts for a phone book (a) and mailing labels (b).
No practical restrictions limit the number of fields that you can use in a layout. Data
entry screens, for example, frequently have many fields so that you can easily enter
all the important information for a record in a single layout. At the other extreme,
a help screen or menu layout might contain only static text and buttons—no fields
at all.
When you design layouts for a database, you might need to create additional fields
that are specific to a single layout. For example, a field that shows a total for each
customer order is important in an invoice layout but unnecessary (or pointless) in
a
b
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