Question

Consider two tables a and b. Id is the primary column in table a. Table a contains 4 records with id values 1, 2, 3 and 4. A_id is the foreign key in table b which is linked with id column of table a. A_id contains 3 records with 1, 2 and 4 values. Can we delete the record from table b whose a_id is 4?

Answer 1

Answer:

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