Online 1Z0-006 Practice Test

Question 1

What is the primary step in creating a physical model?

Options :

A :

Normalizing the database tables

B :

Establishing primary and foreign key relationships

C :

Identifying entities and their relationships

D :

Defining the data types for each attribute

Answer: D

Question 2

When mapping the physical model, why is it important to consider data types?

Options :

A : Data types determine the available storage space for each attribute

B : Data types affect the efficiency of data retrieval operations

C : Data types determine the order of execution for database operations

D : Data types determine the relationships between tables

Answer: A

Question 3

Why is it important to normalize entity relationships in a physical data model?

Options :

A :

To improve data query performance

B :

To eliminate data redundancy

C :

To define primary and foreign key constraints

D :

To enforce data type specifications

Answer: B

Question 4

What is a primary key?

Options :

A :

An attribute that can have multiple values

B :

A reserved word in SQL

C :

A unique identifier for a data entity

D :

A foreign key in a related table

Answer: C

Question 5

What is a foreign key in a relational database?

Options :

A :

A primary key from another table

B :

A key used to establish relationships between tables

C :

A key that can have duplicate values

D :

A constraint that ensures data integrity

Answer: B

EXPERTY DESIGNED 1Z0-006 PRACTICE TEST