Logic Domains

A logic domain has possible values of "yes" , "no" , or unknown . Examples include various application parameters such as whether or not to post transactions on an accrual basis, and control domains that govern the execution of subroutines based upon an exists/does not exist condition.

The Logic domains overlay, shown in Figure 2-3-19, permits you to add logic-specific attributes to those already defined for the domain. It automatically displays after you complete the entries on the Domains specifications screen if the Type you select is LOGIC.

Figure 2-3-19. Logic Domain Overlay

The Logic domains overlay contains the following attributes:

·    Blank OK? indicates, for information only, whether a user should be permitted to leave a field referencing this domain blank on an input image. (Whether or not such a field can actually be left blank is controlled by the image item specification 'Required?'.) The default is “no” . Click the checkbox to toggle between “yes” and “no” values.

·    Default Value establishes a starting value for image items whenever they first display in add mode on an input image, unless modified by a user. If blank, the starting value that displays on the image is unknown or . The Default Value options are blank (default value of unknown or ), Y (default value of yes or ), and N (default value of no or ). The default is blank.

·    Descriptive provides a longer, more easily understood alternative to Field Name, one that is not required to be unique within an application. If blank at all default levels, Field Name is used.

·    Column Hdgs designates up to two lines of column heading text. The APPX output process facility uses this text to generate standard column heading images for Start of Page and Start of Range class frames. For cosmetic reasons, the length of headings should not exceed the length of a field itself. Refer to Standard Column Heading Image for additional information.