Chapter 6

Chapter 6

University

20 Qs

quiz-placeholder

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Chapter 6

Chapter 6

Assessment

Quiz

Business

University

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Created by

Wenshin Chen

Used 7+ times

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20 questions

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1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

An "entity" in databases means something that can store information.

true

false

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

In databases, characteristics that describe an entity are called:

record

file

attribute

tuple

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which one about the traditional environment of database management is NOT true?

poor security

lack of flexibility

lack of data sharing

higher cost

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Database management systems can help solve data issues of traditional environment, NOT including:

reduce data redundancy

eliminate data inconsistency

improve data security

reduce data cost

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which is NOT true about relational database management systems?

data shown in two dimensions

data shown in rows and columns

data shown in tables

data only shown in fields

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The field/attribute that uniquely identities a record is called:

key attribute

unique field

identifying record

primary key

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Primary key used in a second table as look-up field to identify records from the original table is ____.

look up key

second key

foreign key

original key

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