What is Referential integrity?
Declares the constraint of foreign key. Specifically, it requires when a foreign key value is used, it must reference an existing primary key in the paraent table.
External referenceDeclares the constraint of foreign key. Specifically, it requires when a foreign key value is used, it must reference an existing primary key in the paraent table.
External referenceBytebase is an open source, web-based database schema change and version control tool for teams. It offers a web-based collaboration workspace to help DBAs and Developers manage the lifecycle of application database schemas.