DBI202Xuất hiện trong 2 đề thi
What is the foreign key?
Các lựa chọn
AIt is a relational constraint that enforces referential integrity between two tables
BIt is a relational constraint that ensures the values in a specific column or set of columns are unique across all the rows in a table
CThe key that need to make a data in another table
DA collection of data that allows to access and use of that data