Question

6. Which one of the following refers to the "data about data"?

a. Directory

b. Sub Data

c. Warehouse

d. Meta Data

7. Which of the following refers to the level of data abstraction that describes

exactly how the data actually stored?

a. Conceptual Level

b. Physical Level

c. File Level

d. Logical Level

8. To which of the following the term "DBA" referred?

a. Data Bank Administrator

b. Database Administrator

c. Data Administrator

d. None of the above

9. Rows of a relation are known as the _______.

a. Degree

b. Tuples

c. Entity

d. All of the above

10. Which of the following refers to the number of tuples in a relation?

a. Entity

b. Column

c. Cardinality

d. None of the above​

Answer 1

Answer:

Q. 1) meta data

Q. 2) physical level

Q. 3) database administrator

Q. 4) tuples

Q. 5) Cardinality

Answer 2

6. Metadata represents Data about Data that means it describes information about another Data.

(d) Meta Data

7. In the Database Management system, the lowest level of data abstraction is the physical level. It is used to store data and describes how the data is stored in databases.

(b) Physical Level

8. In DBMS, the DBA is referred to as Database Administrator.

(b) Database Administrator

9. In the Relational Database, the rows are represented as Tuples.

(b) Tuples

10. In the Relational Database, the number of Tuples(rows) are referred to as cardinality.

(c) Cardinality