(a) What is referential integrity? How do you impose in your database design? (b) Describe the application of trigger in database. (c) Describe the…

(a) What is referential integrity? How do you impose in your database design?

(b) Describe the application of trigger in database.

(c) Describe the difference between CHAR and VARCHAR data type.

From the BPSC Maintenance Engineer (CSE) 2021 – Written exam, question 5 of 8.

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