A unique, DBMS-supplied identifier used as the primary key of a relation is called a(n): Options: A . &nbspprimary key. B . &nbspforeign key. C . &nbspcomposite key. D . &nbspsurrogate key.

A unique, DBMS-supplied identifier used as the primary key of a relation is call

Question

A unique, DBMS-supplied identifier used as the primary key of a relation is called a(n):

Options:

A . primary key.

B . foreign key.

C . composite key.

D . surrogate key.

Answer: Option D

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Question 1. Which is not true about surrogate keys?....

Question 2. For every relationship, how many possible types of actions are there when enforcing minimum cardinalities?....

Question 3. Which constraint requires that the binary relationship indicate all combinations that must appear in the ternary relatio....indicate all combinations that must appear in the ternary relationship?

Question 4. Each entity is represented as a(n):....

Question 5. For every relationship, how many possible sets of minimum cardinalities are there?....

Question 6. If a relationship has a cascade updates constraint, then if ________ in the parent table is changed, then the same chang....will automatically be made to any corresponding foreign key value.

Question 7. A foreign key is used to implement relationships between tables.....

Question 8. The terms alternate key and candidate key mean the same thing.....

Question 9. In 1:N relationships, which entity becomes the parent entity is arbitrary.....

Question 10. In a 1:1 relationship, the primary key placement is arbitrary.....

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