When choosing between MySQL and PostgreSQL, factors like scalability, performance, data integrity, concurrency, community support, licensing, and adherence to transaction isolation and ACID compliance are crucial. The correct option emphasizes scalability and performance considerations.

Angular follows the MVC (Model-View-Controller) architecture for building applications. It separates the application into three interconnected components to enhance modularity and maintainability.

MongoDB stores data in BSON (Binary JSON) format. BSON is a binary representation of JSON-like documents and is the primary data storage format used by MongoDB.

The alt attribute is used to provide alternative text for an image in HTML. This text is displayed if the image file cannot be loaded or if the user is using a screen reader. It is important for accessibility and SEO purposes.

A Clustered Index is a database indexing technique that helps in optimizing query performance by storing data in a sorted order based on the indexed columns. This physical ordering of data on the disk allows for faster retrieval of rows, especially when queries involve range-based searches or sorting. However, it's important to note that a table can have only one clustered index.

The "git branch" command, when used without any additional arguments, lists all existing branches in the Git repository. It's a handy command to see the available branches and the currently active branch.

PHP is a server-side scripting language commonly used for web development. It allows developers to create dynamic web pages and interact with databases on the server side.

The command used to stage files for committing in Git is git add. This command adds changes to the staging area, preparing them for the next commit. It allows for selective committing of changes.

SDLC stands for Software Development Life Cycle. It is a systematic process for planning, creating, testing, deploying, and maintaining information systems.

AWS Lambda is the AWS service used for serverless computing. It allows developers to run code without provisioning or managing servers. It's a cost-effective way to build applications that respond to events and scale automatically.