Karomi Technology Interview Questions and Answers

OOPS Concepts are the principles of Object-Oriented Programming that help in creating modular and reusable code.

• Encapsulation - bundling data and methods that operate on that data within a single unit

• Inheritance - creating new classes from existing ones, inheriting their properties and methods

• Polymorphism - ability of objects to take on many forms, allowing them to be used in different ways

• Abstraction - hiding implemen...read more

Joins in SQL are used to combine data from two or more tables based on a related column.

• Joins are used to retrieve data from multiple tables in a single query.

• There are different types of joins such as inner join, left join, right join, and full outer join.

• The join condition is specified using the ON keyword and the related columns.

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column;

DOM stands for Document Object Model. It is a programming interface for web documents.

• DOM represents the page so that programs can change the document structure, style, and content.

• It is a tree-like structure that represents the HTML document.

• JavaScript can be used to manipulate the DOM.

• DOM is platform and language independent.

• Examples of DOM methods include getElementById, getElementsByTagName, and createElement.