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: Dec 18, 2025

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Question 1

What is a primary key in a database?

A : A unique identifier for a specific record in a table

B : A way to encrypt sensitive data in a database

C : A data type used to store numerical values

D : A secondary index used for optimizing query performance

Answer: A

Question 2

What is a database?

A : A program that manages data

B : A network of interconnected computers

C : A collection of related data

D : A physical storage device for data

Answer: C

Question 3

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

Question 4

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

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 5

Which SQL statement is used to add a new column to an existing table?

A : DELETE FROM

B : UPDATE

C : ALTER TABLE

D : INSERT INTO

Answer: C

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Total 352 Questions | Updated On: Dec 18, 2025

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