Basic Oracle Interview Question and Answer

Introduction:

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1. What is Oracle? Oracle is a database

2. What is not a constraint used in Oracle? NOT CHECK

3. What is the extension of an Oracle SQL*Plus file? .sql

4. What is objects are part of form in Oracle? the canvas

5. What are the main components of Oracle instance? System Global Area (SGA), Program Global Area (PGA), and background processes.

6. _________ is the first database designed for enterprise grid computing. Oracle Database

7. What is Oracle database used for? store and retrieve related information

8. What is the component of logical database structure in Oracle database? Tablespaces, Schema Objects, Data blocks, Extents and segments

9. When the Initial release date of ORACLE? 1979

10. Oracle database is a? Relational Database

11. What is database design also known as? data modelling

12. How many editions of the Oracle database there? 5

13. A ________ is a single field or combination of fields that contains a unique record. Primary key

14. What type of failure occurs when Oracle fails due to an operating system or system hardware failure? Instance Failure

15. What project object instructs Oracle to connect to remotely access an object in the database? database link

16. ________ processes are events made by Oracle. background processes

17. How many types of database links does the oracle database lets you create? 2

18. Another name of Oracle database's design? schema level

19. The smallest unit of storage in an Oracle database is. Oracle data blocks

20. The prefixes are available to Oracle triggers? new and: old

21. Is the clause used to remove duplicate records from the result set? DISTINCT keyword

22. How many CREATE TRIGGER statements are there in Oracle? 6

23. What are the right Oracle database plans? logical and physical

24. Map entities, attributes and relations in Oracle is represented by _____. Logical schema

25. A _______________ is used to logically group data together. Tablespace

Conclusion:

In conclusion, Oracle interview questions are designed to assess a candidate's knowledge and skills in areas such as database management, programming, and problem-solving. By asking these questions, Oracle aims to identify qualified candidates who can contribute effectively to their organization's technology and software solutions.