Question: 1. CustomerID is: a. A table b. A key C. A columns that refers to a key 2. The arrow from Sale to Book corresponds

1. CustomerID is: a. A table b. A key C. A

1. CustomerID is:

a. A table

b. A key

C. A columns that refers to a key

2. The arrow from Sale to Book corresponds to which column of Sale?

a. ID

b. BookID

c. CustomerID

3. What element of ER diagram does the Book Author table implement?

a. Writes b. Book C. Author

4. Logical design is: a. A process only b. A specification only c. Either a process or a specification

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