Chapter 4 Building Conceptual Data Models

Modifying domain properties in a CDM

You can modify domain properties from the domain property sheet.

When you modify domain properties, a confirmation box appears asking if you want to modify the data items and attributes currently using the domain.


The Data Type check box is automatically selected and available for an update, depending on the options set to enforce non-divergence from a domain.

For information on domain divergence, see section Enforcing non-divergence from domains in a CDM.

You can also select other properties (Check, Rules) that will be updated in their use of the domain.

You can now click one of the following buttons with the following effects:

Button Effect
Yes The data items currently using the domain are modified according to the update
No The data items currently using the domain are not modified according to the update but the current modification is accepted if domain divergence is allowed in the model options
Cancel The update is cancelled and nothing is changed

Steps To modify domain properties in a CDM:

  1. Select Model→Domains to display the list of domains.
  2. Click a domain from the list.

    An arrow appears at the beginning of the line.
  3. Click the Properties tool.

    or

    Double-click the arrow at the beginning of the line.

    The Domain property sheet appears.
  4. Type changes to domain properties.

    or

    Click on a page tab.

    Type or select domain properties as required.
  5. Click OK.

    If the domain is used by one or more data items, an update confirmation box appears asking if you want to modify domain properties for the data items using the domain.
  6. Select the properties that you want to update for all data items using the domain.
  7. Click Yes.

 

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