Chapter 4 Building Conceptual Data Models
You can access data item properties from the list of data items. Each data item definition includes the following general 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 |
A data item definition also includes the following properties, each with their own respective property sheets:
| Property | Description |
|---|---|
| Standard checks | Check parameters defined for the domain |
| Additional checks | Domain constraints or validation rules not defined by standard check parameters |
| Rules | Business rules attached to the domain |
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