Online 1Z0-006 Practice Test

Question 1

What is a relationship in data modeling?

Options :

A :

An attribute of a table

B :

A table in the database

C :

A connection between entities

D :

A field in a table

Answer: C

Question 2

What is the role of database indexes in mapping a physical model?

Options :

A :

To optimize database access and retrieval

B :

To define relationships between tables

C :

To ensure data integrity

D :

To determine the data types for each column

Answer: A

Question 3

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 4

What is the purpose of denormalization in a physical database model?

Options :

A :

To simplify the database structure and reduce maintenance efforts

B :

To eliminate redundancy and ensure data consistency

C :

To optimize query performance and improve data retrieval speed

D :

To define referential integrity constraints and enforce data integrity

Answer: C

Question 5

What is the purpose of defining physical storage structures when mapping a physical model?

Options :

A :

To establish primary and foreign key constraints

B :

To determine the data types for each column

C :

To define relationships between tables

D :

To optimize database access and storage

Answer: D

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