Expleo Group Plsql Developer Interview Questions and Answers

Q1. CREATE A FUNCTION BASED ONLOGIC SHARED
Ans. 
Create a function based on shared logic
• Identify common logic that can be reused in multiple functions

• Create a separate function to encapsulate the shared logic

• Call the shared function from other functions where the logic is needed
Answered by AI
Add your answer
Q2. FOR AN ENTITY GIVE DTAILS OF PREVOUS AND NEXT DATE FOR PARTICULAR DEPATMENT
Add your answer

Q1. Factorial of a number
Ans. 
Factorial of a number is the product of all positive integers up to that number.
• To calculate factorial of a number, multiply all positive integers up to that number.

• Factorial of 0 is 1.

• Example: Factorial of 5 is 5*4*3*2*1 = 120.
Answered by AI
Add your answer
Q2. Sql queries including 2nd highest salary and table joins
Add your answer

Q1. Sql question and table joins
Add your answer
Q2. Modelling of schema
Ans. 
Modelling of schema involves designing the structure of a database to organize and represent data.
• Identify entities and their relationships

• Define attributes for each entity

• Establish primary and foreign keys

• Normalize the schema to reduce redundancy

• Consider performance and scalability
Answered by AI
Add your answer

Q1. EXPLAIN ABOUT UR PRJECT
Ans. 
Developed a PL/SQL project for managing inventory and sales data in a retail store.
• Designed database tables to store product information, sales transactions, and customer details.

• Implemented PL/SQL procedures and functions for adding, updating, and querying data.

• Created triggers to enforce business rules and maintain data integrity.

• Developed reports using PL/SQL queries to analyze sales performance and inventory levels
Answered by AI
Add your answer
Q2. How do you work on performance optimization
Ans. 
I work on performance optimization by analyzing query execution plans, indexing, and code refactoring.
• Analyzing query execution plans to identify bottlenecks

• Creating appropriate indexes to improve query performance

• Refactoring code to optimize resource usage

• Using tools like Explain Plan and SQL Tuning Advisor
Answered by AI
Add your answer

Q1. Window Functions in SQL
Ans. 
Window functions in SQL are used to perform calculations across a set of table rows related to the current row.
• Window functions are used to calculate values based on a set of rows related to the current row.

• They allow you to perform calculations without grouping the rows into a single output row.

• Examples of window functions include ROW_NUMBER(), RANK(), and LAG().
Answered by AI
Add your answer

Q1. Uses of Packages in PL/SQL
Ans. 
Packages in PL/SQL are used to group related procedures, functions, variables, and other PL/SQL constructs together for better organization and security.
• Packages help in modularizing code for easier maintenance and debugging

• They provide encapsulation and hide implementation details

• Packages can contain multiple procedures, functions, variables, cursors, and exceptions

• They improve performance by reducing network traffic

• E...read more
Answered by AI
Add your answer

Q1. Plsql and Oracle SQL
Add your answer

Q1. Discussion for salary
Add your answer

Oracle pl sql developer

Q1. Types of partition in sql
Add your answer
Q2. Can we edit data in complex views, will the underlying table be effected?
Add your answer
Q3. How do you do performance tuning?
Add your answer
Q4. Tell about regex
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