Chapter 3 Building Conceptual Data Models


Data item properties

You can modify an object's properties from its property sheet. To open a data item property sheet, double-click its Browser entry in the Data Items folder.

The General tab contains the following properties:

Property Description
Name The name of the item which should be clear and meaningful, and should convey the item's purpose to non-technical users
Code The technical name of the item used for generating code or scripts, which may be abbreviated, and should not generally include spaces
Comment Descriptive label for the data item
Stereotype Sub-classification used to extend the semantics of an object without changing its structure; it can be predefined or user-defined
Data type Code indicating the data format, such as N for numeric or A for alphanumeric, followed by the number of characters
Length Maximum number of characters
Precision Number of places after the decimal point, for data values that can take a decimal point
Domain Name of the associated domain

The following tabs are also commonly used:

 


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