Describe the circumstances in which you would choose to use embedded SQL rather than SQL alone or only a general-purpose programming language.
Answer to relevant QuestionsConsider the insurance database of Figure, where the primary keys are underlined. Construct the following QBE queries for this relational-database.a. Find the total number of people who owned cars that were involved in ...Let R = (A, B, C), and let r1 and r2 both be relations on schema R. Give expressions in QBE, and Datalog equivalent to each of the following queries: a. r1 ∪ r2 b. r1 ∩ r2 c. r1 − r2 d. IIAB (r1) 1 IIBC ...Referential-integrity constraints as defined in this chapter involve exactly two relations. Consider a database that includes the following relations:salaried-worker (name, office, phone, salary)hourly-worker (name, ...For each of the views that you defined in Exercise 6.10, explain how updates would be performed (if they should be allowed at all).List all functional dependencies satisfied by the relation of Figure.
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