Closure
Specifies the transitive closure of a parent-child hierarchy. Optional, but recommended for better performance. The closure is provided as a set of (parent/child) pairs: since it is the transitive closure these are actually (ancestor/descendant) pairs.
Attributes
| Attribute | Data type | Definition |
|---|---|---|
| parentColumn | String | The parent column |
| childColumn | String | The child column |
Constituent elements
| Element | Definition |
|---|---|
| Table |