Oracle PLSql Interview Questions & Answers

Showing 10 of 35 questions | Page 2

Oracle PLSQL technical interview questions and answers help candidates understand advanced database programming concepts used in enterprise applications. PL/SQL is Oracle’s procedural language extension that supports functions, stored procedures, packages, exceptions, loops, and triggers. Because PL/SQL developers play an important role in backend development, companies like TCS, Wipro, Infosys, Capgemini, Cognizant, and Accenture frequently ask PL/SQL interview questions during technical rounds and placement tests. This guide provides clear explanations of the most commonly asked PL/SQL queries and coding questions. Whether you are a fresher or an experienced developer, mastering PL/SQL helps you solve real-world problems during interviews. You can also download interview PDFs and practice mock tests to boost your confidence.

Showing 10 of 35 questions

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11. What is the output of SIGN function?

1 for positive value, 0 for Zero, -1 for Negative value.

12. What is the maximum number of triggers, can apply to a single table?

12 triggers.

13. Which is the subset of SQL commands used to manipulate Oracle Database structures, including tables?

Data Definition Language (DDL)

14. What operator performs pattern matching?

LIKE operator

15. What operator tests column for the absence of data?

IS NULL operator

16. Which command executes the contents of a specified file?

START or @

17. What is the parameter substitution symbol used with INSERT INTO command?

18. Which command displays the SQL command in the SQL buffer, and then executes it?

RUN

19. What are the wildcards used for pattern matching?

_ for single character substitution and % for multi-character substitution

20. State true or false. EXISTS, SOME, ANY are operators in SQL

TRUE