CHAPTER10

Chapter 10 Databases
Section 10.1 An Introduction to Databases
1.

A rectangular array of data is called a
(A)
(B)
(C)
(D)

2.

Each row in a table is also called a(n)
(A)
(B)
(C)
(D)

3.

record. array. field. selection. A

Which one of the following statements is NOT true about tables?
(A)
(B)
(C)
(D)

4.

field. record. table. database management system.
C

Each column of a table represents a field.
Each row of a table represents a record.
Each record in a table contains unrelated collections of fields.
A table is a rectangular array of data.
C

Which of the following is a collection of one or more (usually related) rectangular arrays of data? (A)
(B)
(C)
(D)

a table a field a record a database
D

5.

Each entry of a field of a table must contain some information. (T/F)
F

6.

The management of databases is one of the major uses of computers today. (T/F)
T

7.

DataBase Explorer can be used to browse through all parts of a connected database. (T/F)
T

8.

What is a primary key?
(A)
(B)
(C)
(D)

9.

A field that uniquely identifies each record.
The first field in every record..
The largest field in every record..
The first field specified when a table is created.
A

The requirement that no record may have a null primary key and that entries for primary keys be unique is called the
(A)
(B)
(C)
(D)

Rule of Referential Integrity.
Rule of Primary Keys.
Rule of Entity Integrity.
Rule of Null Values.
C

10. Which one of the following statements is true about primary keys?
(A)
(B)
(C)
(D)

A column of names is usually a good choice for use as a primary key.
Only a single record can be used as a primary key.
Social Security numbers are never used as a primary key.
A primary key is used to uniquely identify records in a table.
D

11. Which of the following is used to uniquely identify records in a table?
(A)
(B)
(C)
(D)

a Rule of Referential Integrity a foreign key a primary key a relational database
C

12. Which of the following is used to insure that each value for