Oracle - Packages MCQ

Oracle – Packages

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1. What is the primary purpose of using packages in Oracle?

To perform calculations

To modularize code

To define tables

To insert data into tables

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2. In Oracle, what type of construct allows you to encapsulate related procedures, functions, and data into a single unit?

Procedure

Package

Module

Trigger

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3. What is the primary advantage of using packages in Oracle?

Improved code organization and reusability

Enhanced database security

Faster query performance

Dynamic data retrieval

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4. In Oracle, which part of a package contains the declarations of public procedures, functions, and variables?

Package header

Package footer

Package body

Package specification

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5. What is the primary role of a package body in Oracle?

To declare public package elements

To execute DML statements

To contain private procedures and functions

To define global variables

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6. How can you initialize package variables in Oracle?

By using a special initialization procedure

By assigning values in the package body

By using a constructor

By declaring them as constants

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7. In Oracle, what is the purpose of global package variables within a single session?

They hold session-specific data

They are available across multiple sessions

They are accessible from any package in the database

They store data shared among all sessions

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8. What type of package data can be accessed globally within a single Oracle session?

Private package data

Public package data

Dynamic package data

Static package data

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9. In Oracle, what is the primary advantage of grouping related functionality in packages?

Reduced database size

Enhanced database security

Faster query performance

Improved code organization

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10. When should you use packages to encapsulate data access logic in Oracle?

When you need to perform calculations

When you want to create tables

When you need to insert data

When you want to modularize code

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11. In Oracle, what is the primary benefit of avoiding hardcoding literals in packages?

Reduced database size

Enhanced code reusability

Improved code organization

Better query performance

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12. What is the primary role of packaged cursors in Oracle?

To execute DML operations

To store SQL statements

To encapsulate query logic

To define table structures

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13. In Oracle, what is the purpose of serializable packages?

To store binary data

To prevent multiple sessions from accessing a package simultaneously

To improve query performance

To execute transactions

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14. When is it appropriate to use packages in Oracle?

When you want to encapsulate data access logic

When you want to create triggers

When you need to perform calculations

When you need to insert data

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15. In Oracle, what is the primary purpose of encapsulating data access logic in packages?

To enhance database security

To reduce query performance

To increase database size

To improve code organization

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16. What is the primary role of caching static session data using packages in Oracle?

To prevent data access

To enforce data constraints

To store frequently used data for better performance

To improve code readability

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17. In Oracle, what is the primary advantage of encapsulating logically related functionality in packages?

Reduced code size

Faster query performance

Enhanced code readability

Improved code reusability

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18. How does Oracle Packages help in encapsulating data access logic?

By defining global variables

By grouping related functionality

By creating virtual tables

By executing DML operations

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19. In Oracle, what type of data can be stored in global public variables within a single session?

Private package data

Dynamic package data

Session-specific data

Public package data

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20. What is the primary role of a package specification in Oracle?

To declare private package elements

To define package data structures

To contain package initialization code

To define public package elements

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21. In Oracle, which part of a package contains the actual implementation of procedures and functions?

Package body

Package footer

Package header

Package specification

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22. What is the purpose of the RULES FOR CALLING PACKAGED ELEMENTS in Oracle packages?

To define naming conventions

To enforce access control

To document usage guidelines

To specify the order of procedure execution

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23. What is the primary purpose of encapsulating related functionality in packages in Oracle?

To create dynamic SQL statements

To prevent SQL injection

To enhance query performance

To improve code organization and reusability

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24. In Oracle packages, what is the recommended approach for preventing SQL injection?

Implementing proper error handling

Avoiding the use of packages

Using dynamic SQL statements

Using static SQL statements

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25. When should you use autonomous transactions in Oracle packages?

To enforce data constraints

To encapsulate complex calculations

To enhance code organization

To execute DML operations

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Oracle – Packages MCQ