Development
What is Database?
A database is organized storage for application data. It allows creating, reading, updating, and deleting data efficiently. Common types include SQL (relational) and NoSQL databases.
Definition
A database is a structured system for storing and retrieving data. Relational databases (SQL) like PostgreSQL store data in tables with defined relationships. NoSQL databases like MongoDB store flexible documents or key-value pairs. The choice depends on data structure, query needs, and scale requirements. Most MVPs work well with PostgreSQL, which is reliable, well-understood, and handles most use cases.
Key Points
- SQL databases: PostgreSQL, MySQL (structured tables)
- NoSQL databases: MongoDB, Firebase (flexible documents)
- CRUD operations: Create, Read, Update, Delete
- Indexing improves query performance
- Backups and migrations are essential
Examples
- 1.PostgreSQL for a SaaS application
- 2.MongoDB for content management systems
- 3.Redis for caching and sessions
- 4.Supabase as a managed PostgreSQL service
Frequently Asked Questions
Related Terms
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