Problem1 explain the distinction between a type x and a, Ask an Expert

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Problem

1. Explain the distinction between a type x and a reference type ref(x). Under what circumstances would you choose to use a reference type?

2. Consider the E-R diagram in Figure 2.11, which contains composite, multivalued and derived attributes.

a. Give an SQL:1999 schema definition corresponding to the E-R diagram. Use an array to represent the multivalued attribute, and appropriate SQL:1999 constructs to represent the other attribute types.

b. Give constructors for each of the structured types defined above.

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Computer Engineering, Engineering

Category:- Computer Engineering
Reference No.:- M92704886

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