(a) What do you mean by virtual memory? (b) What is normalization? Why is it needed? (c) What is a weak entity set? How the primary key is generated…

(a) What do you mean by virtual memory?

(b) What is normalization? Why is it needed?

(c) What is a weak entity set? How the primary key is generated for weak entity set?

From the BPSC Sub-Assistant Maintenance Engineer December 2021 – Written exam, question 4 of 8.

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