OpenOffice.org OpenOffice - 3.0 Przewodnik Szybki Start Pobierz pdf (Strona 256)

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a) Right-click the line connecting the Date fields in the two table

lists to open a context menu.

b) Select Edit to open the Relation window (Figure 192).

c) Select Update cascade.

d) Select Delete cascade.

Figure 192: Update options and Delete options section

While these options are not absolutely necessary, they do help. Having

these options selected permits you to update a table that has a

relationship defined with another table. It also permits you to delete a

field from the table.

Creating a database form

Databases are used to store data. But, how is the data put into the

database? Forms are used to do this. In the language of databases, a

form is a front end for data entry and editing.

Figure 193: Fields of a simple

form

Figure 194: Simple Form with

additions

A simple form consists of the fields from a table (Figure 193). More

complex forms can contain much more. These can contain additional

text, graphics, selection boxes and many other elements. Figure 194 is

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