When using DataRelations to establish a hierarchy, what is the role of the ParentKeyConstraint and ChildKeyConstraint?
- Enforces referential integrity between child and parent tables
- Enforces uniqueness in the parent key column
- Establishes the relationship between child and parent tables
- Specifies the data type of the parent key column
The ParentKeyConstraint and ChildKeyConstraint play a crucial role in enforcing referential integrity between child and parent tables in a dataset. The ParentKeyConstraint ensures that each value in the parent key column is unique, while the ChildKeyConstraint enforces that each foreign key value in the child table corresponds to a valid primary key value in the parent table. This helps maintain the integrity of the data hierarchy established through DataRelations.
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