Question

I need help!!!
Solve all these!!!

Answer 1

sorry I do not have time to solve

Answer 2

1. Answer: a

Explanation: Fields are the column of the relation or tables.Records are each row in relation.Keys are the constraints in a relation

2. Answer: c

Explanation: Column has only one set of values.Keys are constraints and row is one whole set of attributes.Entry is just a piece of data.

3. Answer: b

Explanation: Tuple is one entry of the relation with several attributes which are fields.

4. Answer: b

Explanation: Attribute is a specific domain in the relation which has entries of all tuples.

5. Answer: a

Explanation: The values of the attribute should be present in the domain.Domain is a set of values permitted .

6. Answer: d

Explanation: Instance is a instance of time and schema is a representation.

7. Answer: b

Explanation: The relation course has a set of attributes course_id,sec_id,semester .

8. Answer: b

Explanation: None.

note sure about 9 and 10..