Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.
Both are used to encrypt data.
Primary keys uniquely identify records; foreign keys reference primary keys from other tables.
Foreign keys can exist without primary keys in a table.
Primary keys can be duplicated across tables.
Video Explanation
Watch Video Solution
Login to get access
Continue with nearby questions to strengthen the same chapter concept while you still have the context fresh in mind.