ITC Infotech Plsql Developer Interview Questions and Answers

Q1. 1. Basic questions of PLSQL. 2. When to rebuild indexes and how to build them. 3. Performance tuning.
Add your answer

JOINS DIFFERENCE BETWEEEN (LEFT,RIGHT,INNER,FULL)

CREATE OR REPLACE PROCEDURE PP(A NUMBER) IS
BEGIN
DBMS_OUTPUT.PUT_LINE(A);
END;
/

Q1. Views and triggers basics
Add your answer
Q2. Learning capabilities of new softwares
Ans. 
I have a strong ability to learn new software quickly.
• I am a self-motivated learner and enjoy exploring new technologies.

• I am comfortable with online tutorials, documentation, and experimenting with new software.

• I have experience learning new software such as Oracle SQL Developer, Toad, and PL/SQL Developer.

• I am able to adapt to new software quickly and efficiently.
Answered by AI
Add your answer

Q1. Self introduction and questions related to my project
Add your answer
Q2. What are joins in SQL, and can you provide examples of their usage?
Ans. 
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables based on a related column.

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column;
Answered by AI
Add your answer
Q3. What are the built-in functions available in SQL?
Ans. 
Some built-in functions in SQL include AVG, COUNT, MAX, MIN, SUM, and CONCAT.
• AVG: Calculates the average value of a numeric column

• COUNT: Counts the number of rows in a result set

• MAX: Returns the maximum value in a column

• MIN: Returns the minimum value in a column

• SUM: Calculates the sum of values in a column

• CONCAT: Concatenates two or more strings together
Answered by AI
Add your answer
Q4. What are the different types of cursors in database management systems?
Ans. 
Types of cursors in database management systems include implicit, explicit, and parameterized cursors.
• Implicit cursors are automatically created by the database when a SQL statement is executed.

• Explicit cursors are defined by the programmer and give more control over the result set.

• Parameterized cursors allow for dynamic SQL statements with parameters.

• Examples: SELECT statement using implicit cursor, DECLARE, OPEN, FET...read more
Answered by AI
Add your answer
Q5. What is the difference between procedures and functions in programming?
Ans. 
Procedures are used to perform an action, while functions return a value.
• Procedures do not return a value, while functions do.

• Functions can be used in SQL queries, while procedures cannot.

• Functions can be called from within SQL statements, while procedures cannot.

• Procedures can have OUT parameters to return multiple values, while functions can only return a single value.
Answered by AI
Add your answer
Q6. What is the query to print the third highest salary from the given table?
Ans. 
Use a subquery to find the third highest salary in a table.
• Use the RANK() function to assign a rank to each salary in descending order.

• Filter the results to only include rows with a rank of 3.

• Consider handling ties in salaries appropriately.
Answered by AI
Add your answer
Q7. What is a package, and how do you utilize it in your project?
Ans. 
A package is a collection of related procedures, functions, variables, and other PL/SQL constructs.
• Packages help organize and encapsulate code for easier maintenance and reuse.

• They can contain both public and private elements.

• Packages can be used to group related functionality together, improving code modularity.

• Example: CREATE PACKAGE my_package AS ... END my_package;
Answered by AI
Add your answer
Q8. Can you describe two complex JIRA issues you have worked on?
Ans. 
Resolved a critical bug causing data loss and implemented a new feature for better user experience.
• Identified root cause of data loss bug by analyzing database queries and logs

• Collaborated with cross-functional teams to prioritize and implement a fix

• Designed and implemented a new feature based on user feedback to enhance usability
Answered by AI
Add your answer
Q9. What are the different types of indexes?
Ans. 
Different types of indexes include B-tree, Bitmap, Function-based, and Reverse key indexes.
• B-tree indexes are the most common type and are suitable for most indexing needs.

• Bitmap indexes are used for columns with low cardinality, such as gender or status columns.

• Function-based indexes are created based on expressions or functions applied to columns.

• Reverse key indexes store keys in reverse order to reduce contention in...read more
Answered by AI
Add your answer
Q10. What are analytical functions in sql?
Ans. 
Analytical functions in SQL are used to perform calculations across a set of rows related to the current row.
• Analytical functions operate on a group of rows and return a single result for each row.

• They can be used to calculate running totals, moving averages, rank, percentiles, etc.

• Examples include ROW_NUMBER(), RANK(), DENSE_RANK(), SUM() OVER(), AVG() OVER().
Answered by AI
Add your answer
Q11. What are aggregate functions in SQL?
Ans. 
Aggregate functions in SQL are functions that operate on a set of values and return a single value as output.
• Aggregate functions include functions like SUM, AVG, COUNT, MIN, and MAX.

• They are used with the GROUP BY clause to perform calculations on groups of rows.

• Examples: SELECT SUM(salary) FROM employees; SELECT AVG(age) FROM students GROUP BY class;
Answered by AI
Add your answer
Q12. How did you handle performance tuning in your project?
Ans. 
I identified and optimized slow-performing SQL queries by analyzing execution plans and indexing strategies.
• Identified slow-performing SQL queries using tools like Oracle SQL Developer or TOAD.

• Analyzed execution plans to understand query performance bottlenecks.

• Optimized queries by rewriting SQL code, adding indexes, or restructuring data.

• Used tools like Explain Plan or SQL Tuning Advisor to improve query performance.

• R...read more
Answered by AI
Add your answer
Q13. What is data modeling?
Ans. 
Data modeling is the process of creating a visual representation of data structures and relationships within a database.
• Data modeling helps in organizing and understanding complex data systems.

• It involves identifying entities, attributes, and relationships between them.

• Examples include ER diagrams, UML diagrams, and relational data models.
Answered by AI
Add your answer
Q14. What steps did you take to perform root cause analysis in your project?
Ans. 
I conducted thorough analysis by reviewing code, logs, and discussing with team members.
• Reviewed code to identify potential issues

• Analyzed logs for error messages and patterns

• Discussed with team members to gather insights and perspectives

• Used debugging tools to trace the root cause
Answered by AI
Add your answer
Q15. What is a trigger in database management, and what are its different types?
Ans. 
A trigger in database management is a special type of stored procedure that is automatically executed when certain events occur in a database.
• Triggers can be used to enforce business rules, maintain referential integrity, and automate repetitive tasks.

• There are two main types of triggers: row-level triggers and statement-level triggers.

• Row-level triggers are fired for each row affected by a triggering statement, while ...read more
Answered by AI
Add your answer

Q1. Technical question related about based on project and domain knowledge
Add your answer

Q1. Asked about flexibility and discussion with salary
Add your answer

Q1. What was temp variable
Ans. 
A temporary variable used to store data during program execution.
• Temp variables are used to hold data temporarily during program execution.

• They are typically used in loops or conditional statements.

• Once the program execution is complete, the temp variable is no longer needed.

• Example: int temp = 0; for(int i=0; i<10; i++) { temp += i; }

• In this example, the temp variable is used to store the sum of the numbers 0-9.
Answered by AI
Add your answer
Q2. Breif about previous company
Add your answer

Q1. Document verification and onboarding
Add your answer

Q1. 1. Tell me about yourself. 2. Topics like Stored procedure, functions, cursors, package.
Add your answer

Q1. Salary negotiation, notice period, immediate joining, policy,
Add your answer

Q1. Coding is must in plsql developer
Add your answer