Chetu Interview Questions and Answers for Experienced

Joins in SQL combine rows from two or more tables based on related columns.

• INNER JOIN: Returns records with matching values in both tables. Example: SELECT * FROM A INNER JOIN B ON A.id = B.id;

• LEFT JOIN: Returns all records from the left table and matched records from the right table. Example: SELECT * FROM A LEFT JOIN B ON A.id = B.id;

• RIGHT JOIN: Returns all records from the right table and matched records from t...read more

Print and echo are both used to output data in PHP, but they have key differences in usage and behavior.

• echo can take multiple parameters: echo 'Hello', 'World';

• print can only take one argument: print 'Hello World';

• echo is slightly faster than print because it doesn't return a value;

• print returns 1, so it can be used in expressions: $result = print 'Hello';

• echo does not require parentheses: echo 'Hello'; while pri...read more

I manage work pressure by prioritizing tasks, maintaining clear communication, and practicing self-care to ensure productivity and focus.

• Prioritize tasks using a method like the Eisenhower Matrix to focus on what's urgent and important.

• Break down larger projects into smaller, manageable tasks to avoid feeling overwhelmed.

• Set realistic deadlines and communicate them clearly to stakeholders to manage expectations.

• Us...read more

Terraform is an open-source infrastructure as code tool for building, changing, and versioning infrastructure safely and efficiently.

• Declarative Configuration: Users define infrastructure in configuration files using HashiCorp Configuration Language (HCL).

• Resource Management: Terraform manages resources across various providers like AWS, Azure, and Google Cloud.

• State Management: It maintains a state file to keep t...read more

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

• Encapsulation: OOP allows bundling of data and methods that operate on that data within a single unit, or class. For example, a 'Car' class can encapsulate properties like 'color' and methods like 'drive()'.

• Inheritance: OOP enables a new class to inherit properties and methods from an existi...read more

Storefront apk is a mobile application package file used for online shopping platforms.

• Storefront apk is a file format used for Android apps that provide online shopping services.

• It contains all the necessary files and resources for the app to function properly.

• Users can download and install the storefront apk on their Android devices to access the online shopping platform.

• Examples of storefront apks include Amazo...read more