PowerDesigner provides default model checks to verify the validity of entities.
|
Check |
Description and Correction |
|---|---|
|
Entity name and code uniqueness |
Entity names and codes must be unique in the namespace. Manual correction: Modify the duplicate name/code Automatic correction: Appends a number to the duplicate name/code. |
|
Entity name and code maximum length |
The entity name and code length is limited to a maximum length of 254 characters specified in the naming conventions of the model options. Manual correction: Modify the entity name/code length to meet this requirement. Automatic correction: Truncates the entity name/code length to the maximum length specified in the naming conventions. |
|
Existence of attributes |
An entity must always contain at least one attribute. Manual correction: Add an attribute to the entity or delete the entity. Automatic correction: None. |
|
Number of serial types > 1 |
An entity cannot have more than one serial type attribute. Serial types are automatically calculated values. Manual correction: Change the types of the appropriate entity attributes to have only one serial type attribute. Automatic correction: None. |
|
Existence of identifiers |
An entity must contain at least one identifier. Manual correction: Add an identifier to the entity or delete the entity. Automatic correction: None. |
|
Existence of relationship or association link |
An entity must have at least one relationship or association link. Manual correction: Add a relationship or an association link to the entity or delete the entity. Automatic correction: None. |
|
Redundant inheritance |
An entity inherits from another entity more than once. This is redundant and adds nothing to the model. Manual correction: Delete redundant inheritances Automatic correction: None. |
|
Multiple inheritance |
An entity has multiple inheritance. This is unusual but can be tolerated if you defined this check as a warning. Manual correction: Make sure that the multiple inheritance is necessary in your model. Automatic correction: None. |
|
Parent of several inheritances |
An entity is the parent of multiple inheritances. This is unusual but can be tolerated if you defined this check as a warning. Manual correction: Verify if the multiple inheritances could not be merged. Automatic correction: None. |
|
Redefined primary identifier |
Primary identifiers in child entities must be the same as those in their parents. Manual correction: Delete those primary identifiers in the child entities that are not in the parent entity. Automatic correction: None. |