Ocean Wizard Plsql Developer Interview Questions and Answers

Q1. Basic SQL related question
Add your answer
Q2. Good knowledge on pl SQL is preferred, few in-depth questions . Keep your cool and answer every question with best of your knowledge
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

Oracle pl sql developer

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. What is packages and types
Ans. 
Packages and types are two important components in PL/SQL used for organizing and defining reusable code and data structures.
• Packages are containers for related procedures, functions, variables, and other PL/SQL constructs.

• Types are user-defined data structures that can be used to define new data types in PL/SQL.

• Packages can contain types as well as other PL/SQL constructs, providing a way to organize and encapsulate r...read more
Answered by AI
Add your answer

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