Mock Oracle Test -DBMS SQL,PL/SQL

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| By Pras027

Pras027

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Quizzes Created: 1 | Total Attempts: 3,316

| Attempts: 3,316

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Difficulty

Sequential Easy First Hard First

1/5 Questions

A record is a collection of individual fields that represents a row in the table.
- True
- False

About This Quiz

This MOCK ORACLE TEST assesses knowledge in DBMS SQL and PL\/SQL, covering cursor initialization, user-defined subtypes, %ROWTYPE usage, and loop bounds. It is designed for learners to validate their SQL skills and understanding of PL\/SQL procedures.

2.

What is the correct order for steps of initialing the cursor? a.FETCH b.OPEN C.Declare d.close
- A,c,d,b,
- C,b,a,d
- B,d,a,c,
- C,a,d,b,
Correct Answer

A. C,b,a,d

Explanation

The correct order for initializing the cursor is to first declare the cursor, then open it, fetch the required data, and finally close the cursor. So, the correct order is c (Declare), b (OPEN), a (FETCH), and d (close).

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2
3.

User-defined SUBTYPES are subtypes based on an existing type.
- True
- False
Correct Answer

A. True

Explanation

User-defined subtypes are subtypes that are created by the user based on an existing type. This means that the user can define new subtypes that inherit the characteristics and behaviors of the existing type, but with additional or modified attributes and behaviors. This allows for customization and specialization of types to better suit specific needs or requirements. Therefore, the statement "User-defined subtypes are subtypes based on an existing type" is true.

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1
4.

%ROWTYPE is used to declare a variable with the same datatype as a column of a specific table
- True
- False
Correct Answer

A. False

Explanation

The statement is false because %ROWTYPE is used to declare a variable with the same datatype as a row in a specific table, not just a column. %ROWTYPE allows you to create variables that can hold an entire row of data from a table, including all of its columns. This can be useful when you want to perform operations on an entire row of data at once.

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1
5.

While using FOR loop,Upper_Bound and Lower_Bound must be integers.
- True
- False
Correct Answer

A. True

Explanation

The statement is true because when using a FOR loop, the upper bound and lower bound values must be integers. The FOR loop is used to iterate over a sequence of values, and since integers are whole numbers, they are required to define the range of the loop. If non-integer values are used as bounds, it would result in a syntax error as the loop cannot iterate over non-integer values.

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Current Version
Mar 22, 2023

Quiz Edited by
ProProfs Editorial Team
Jun 01, 2012

Quiz Created by
Pras027

Mock Oracle Test -DBMS SQL,PL/SQL

A record is a collection of individual fields that represents a row in the table.

Quiz Preview

What is the correct order for steps of initialing the cursor? a.FETCH b.OPEN C.Declare d.close

User-defined SUBTYPES are subtypes based on an existing type.

%ROWTYPE is used to declare a variable with the same datatype as a column of a specific table

While using FOR loop,Upper_Bound and Lower_Bound must be integers.