Lookups

Description

When entering values in a Character, Numeric, or Date field, it is useful to choose a value from a list. For example, in a table of invoice items, you can use a Lookup to display a list of products from which to choose.

You can use a Lookup to display and insert values from either a pre-defined list (that you create in the Field Rules Editor ) or from a lookup table. The user selects a value to enter in the lookup field.

By choosing entries from a list, instead of typing them manually, data entry is expedited and accuracy is ensured. A selection from a lookup list can fill multiple fields in the current record.

Field Rule lookups are not supported by grid or dialog components. In these applications, you must define a DropDownBox control and set its Choices properties.

 Creating a Lookup

  1. Select your table in the Table/Sets tab of the Control Panel.

  2. Select Design > Field Rules.

  3. Select the field from the drop-down list at the top left corner of the dialog.

  4. Display the Lookups tab. Field types that support choices include the following:

    • Combo Box

    • List Box

    • Multi-state button

    • Tree Control

    • Drop Down Tree

    • Record List-List Box

    • Two-state Button

    • Check Box

    • Field Select

    • File Select

    • Filter Builder

    • Order Builder

  5.  Selecting the Type of Lookup

    Select one of the five types of Lookup styles. The options are:

    •  Simple list

      Use when you have a static list of options, such as gender.

    •  Cascading list

      Use for a limited set of values that can be presented in a menu hierarchy

    •  Table lookup

      Use for dynamic, high transaction volume applications where you need to associate records in the current table with a changing list of values in the lookup table.

    •  Conditional table lookup

      Use for situations where you need a two-stage lookup. The first value selects the table. The second value generates the selection list.

    •  Previous values

      Allows you to build a lookup list as you go. A good solution when you cannot anticipate the values that will go into the list.

See Also