Database Modelling

Database Modelling

12th Grade

14 Qs

quiz-placeholder

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Database Modelling

Database Modelling

Assessment

Quiz

Computers

12th Grade

Practice Problem

Medium

Created by

rps.informatika rps.informatika

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14 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

A conceptual model includes :

Entities, Attributes, Unique Identifiers and Relationships

Only Entities, Attributes and Unique Identifiers

Only Entities, Attributes and Relationships

Only Entities and Relationships

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The components of a relationship include all of the following except :

Names

Relational Integrity

Cardinality

Optionality

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The Physical Model is derived from the Logical Model. True or False?

True

False

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A foreign key is a column or combination of columns in one table that uniquely identifies a row of another table.  True or False?

True

False

5.

MULTIPLE SELECT QUESTION

30 sec • 2 pts

The cardinality of a relationship can be _____________. (Choose two)

one or more

one to one

many to many

one and only one

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

A table must have a primary key. True or False?

True

False

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

In the relational model, relationships between relations or tables are created by using?

Foreign key

Composite keys

Primary keys

Candidate keys

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