You can modify an object's properties from its property sheet. To open a business rule property sheet, double-click its Browser entry in the Business Rules folder. The following sections detail the property sheet tabs that contain the properties most commonly entered for business rules.
The General tab contains the following properties:
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Property
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Description
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Name
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The name of the item which should be clear and meaningful, and should convey the item's purpose to non-technical users
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Code
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The technical name of the item used for generating code or scripts, which may be abbreviated, and should not generally include spaces
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Comment
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Descriptive label for the rule
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Stereotype
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Sub-classification used to extend the semantics of an object.
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Type
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Specifies the nature of the business rule. You can choose between:
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Constraint – a check constraint on a value. In a PDM, constraint business rules can be generated in the database. For example, "The start date should be inferior to the end date of a project."
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Definition – a property of the element in the system. For example; "A customer is a person identified by a name and an address".
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Fact – a certainty in the system. For example, "A client may place one or more orders".
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Formula – a calculation. For example, "The total order is the sum of all the order line costs".
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OCL constraint [OOM only] – An Object Constraint Language expression.
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Requirement – a functional specification. For example, "The model is designed so that total losses do not exceed 10% of total sales".
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Validation – a constraint on a value. For example, "The sum of all orders for a client must not be greater than that client's allowance".
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The following tabs are also available:
- Expression Tab - Though business rules typically start out as descriptions, as you develop your model and analyze your business problem, you can enrich them by adding technical expressions on this tab. Expressions are used primarily in CDMs and PDMs. Each rule can include two types of expression, which you define on the appropriate sub-tab:
- OCL Constraint Tab - This tab is only available for business rules with a type of OCL Constraint. The Object Constraint Language is the UML expression language. Enter your OCL expression in the text field.