The
DeletionRule property is used to configure the deletion rule (integrity management) to be applied to the data file described through programming. You can:
- Find out the deletion rule used for a data file defined in the analysis or through programming
- Define the deletion rule used for a data file (when describing the dynamic link through programming only).
// Define the deletion rule used in the OrdLine link
OrdLine.DeletionRule = hIntegrityForbidden
...
// Validate the data file description
HDescribeFile(OrdLine)
Syntax
Finding out the deletion rule Hide the details
<Deletion rule> = <Link>.DeletionRule
<Deletion rule>: Integer constant
The different deletion rules are as follows: | |
| hIntegrityCascade | Cascading deletion: all the linked records are deleted in cascade when the key item is deleted from the source file. |
| hIntegrityDefaultValue | Default deletion: the linked keys are initialized with their default value when the key item is deleted from the source file. |
| hIntegrityForbidden | Deletion not allowed: the key item cannot be deleted from the source file if the record is linked to another record. |
| hIntegrityNone | No integrity management: no specific action is performed in the linked file when the key item is deleted from the source file of the link. |
<Link>: Character string
Name of the link defined in the analysis or by the Link description type.
Defining the deletion rule used in the link defined through programming Hide the details
<Link>.DeletionRule = <Deletion rule>
<Link>: Character string
Name of the link used. This name was defined by the Link description type.
<Deletion rule>: Integer constant
The different deletion rules are as follows: | |
| hIntegrityCascade | Cascading deletion: all the linked records are deleted in cascade when the key item is deleted from the source file. |
| hIntegrityDefaultValue | Default deletion: the linked keys are initialized with their default value when the key item is deleted from the source file. |
| hIntegrityForbidden | Deletion not allowed: the key item cannot be deleted from the source file if the record is linked to another record. |
| hIntegrityNone | No integrity management: no specific action is performed in the linked file when the key item is deleted from the source file of the link. |