Flask SQLAlchemy

Flask SQLAlchemy is an extension for Flask, a popular Python web framework, that adds support for SQLAlchemy, an Object-Relational Mapping (ORM) library. With Flask SQLAlchemy, you can easily integrate a relational database into your Flask application and interact with it using Python objects.

Key Features:

• Object-Relational Mapping (ORM): Flask SQLAlchemy allows you to define database models as Python classes. These classes represent tables in your database, and instances of these classes correspond to rows in the tables.
• Database Sessions: Flask SQLAlchemy provides a session interface for handling database transactions. Sessions help manage the lifecycle of interactions with the database.
• Querying: You can use SQLAlchemy's powerful querying capabilities to retrieve, filter, and manipulate data in the database using a Pythonic syntax.
• Migrations: Flask SQLAlchemy integrates with Alembic for database migrations. Migrations help manage changes to your database schema over time as your application evolves.
• Integration with Flask: Flask SQLAlchemy is designed to work seamlessly with Flask. It integrates with Flask's application and request context, making it easy to use within your Flask routes and views.

Usage:

Flask SQLAlchemy is commonly used for building web applications where a relational database is needed to store and retrieve data. It is suitable for a wide range of applications, from small projects to large-scale applications requiring complex data models and relationships.

For more detailed information, refer to the official Flask SQLAlchemy documentation.