Junior Software Executive Interview Questions and Answers

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 between them

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

• INNER JOIN returns rows when there is at least one match in both tables

• LEFT JOIN returns all rows from the left table and the matched rows from the right table

• RIGHT JOIN returns all rows from the right table an...read more

OOPS (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data and code.

• OOPS focuses on creating reusable code through the use of classes and objects.

• Encapsulation, inheritance, polymorphism, and abstraction are key principles of OOPS.

• Example: Inheritance allows a class to inherit properties and methods from another class, promoting code reusability.