MongoDB:

Overview: MongoDB is a widely-used NoSQL document database known for its flexibility and scalability. It stores data in a flexible JSON-like format called BSON, making it suitable for a variety of use cases.

• Features
• Rich querying capabilities with support for complex queries and indexing.
• Horizontal scalability through sharding, allowing efficient distribution of data across multiple servers.
• Flexible schema design, enabling easy modifications and accommodating evolving data structures.
• Powerful aggregation framework for performing advanced data analysis and reporting.

Firebase

Firebase is a comprehensive platform offered by Google that includes a variety of tools for building web and mobile applications. It provides a real-time database and various backend services, making it ideal for rapid application development.

• Features
• Real-time data synchronization across clients, enabling collaborative and responsive applications.
• Serverless architecture, eliminating the need for server-side code management.
• Authentication and authorization services for secure user management.
• Cloud Functions for serverless computing and executing custom backend logic.
• Easy integration with other Firebase services like hosting, storage, and analytics.