Question: Q4 please provide answers for these SQL database questions Study the scenario and complete the question(s) that follow: Entity Relationship Consider a triple association (K)

Q4 please provide answers for these SQL database questions Study the

Q4 please provide answers for these SQL database questions

Study the scenario and complete the question(s) that follow: Entity Relationship Consider a triple association (K) among X, Y, and Z entity sets, where X and Y each have a key constraint and X has 100% involvement. X has two characteristics, x1 and x2, with x1 being the key; Y and Z are comparable. K does not have any descriptive properties. Source: Okonkwo, C. (2021) Question 4 4.1 Define tables matching to this information using SQL statements to cover as many of the constraints as feasible. (10 Marks) 4.2 List the duties of a Database Administrator (DBA). (5 Marks) 4.3 Does the DBA still need to know about query optimization if we presume that the DBA will never execute his/her own queries? Why? (10 Marks) [Sub Total 25 Marks]

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