Chapter 4 Building Conceptual Data Models

Creating an association attribute from the list of association attributes

You can create an association attribute directly in the list of attributes for an association. When you create an association attribute, it is automatically added to the list of data items. If you select Allow Reuse as a model option, the new data item can be used as an attribute for other associations or entities.

Steps To create an association attribute from the list of association attributes:

  1. Double-click the association to display the association property sheet.
  2. Click the Attributes tab to display the corresponding page.

    It lists association attributes associated with the association.
  3. Click a blank line in the list.

    or

    Click the Add a Row tool.

    An arrow appears at the beginning of the line.
  4. Type an association attribute name and an association attribute code.

    Note   Automatically reuse a data item
    If you select the data item model options Allow Reuse and Unique Code and you type the name of a data item that is already in use, you automatically reuse the data item.

  5. Click OK.

 

Copyright (C) 2005. Sybase Inc. All rights reserved.