Free Oracle 1Z0-006 Exam Questions

Become Oracle Certified with updated 1Z0-006 exam questions and correct answers

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Total 352 Questions | Updated On: Feb 17, 2025

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Question 1

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

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 2

Which of the following is NOT a consideration when determining the relationships between tables during mapping of the physical model?

A : Table naming conventions

B : Primary key constraints

C : Cardinality

D : Foreign key constraints

Answer: A

Question 3

What is the difference between a logical model and a physical model in database design?

A : A logical model is created by developers, while a physical model is created by database administrators.

B : A logical model focuses on performance optimization, while a physical model focuses on data integrity.

C : A logical model represents the database structure in terms of entities and relationships, while a physical model represents the actual implementation of the database.

D : A logical model is used for small-scale databases, while a physical model is used for large-scale databases.

Answer: C

Question 4

What is the purpose of denormalization in a physical model?

A : To establish primary and foreign key relationships

B : To enforce data integrity

C : To improve data retrieval performance

D : To eliminate all redundancy in the database

Answer: C

Question 5

What is the primary step in creating a physical model?

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

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Total 352 Questions | Updated On: Feb 17, 2025

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