Databases are mainly divided into two types: SQL and NoSQL.
SQL databases store data in tables with fixed structure.
NoSQL databases store data in flexible formats such as documents or key-value pairs.
Both are used in modern applications depending on the project requirement.
SQL databases use predefined table structures.
Each table has fixed columns and data types.
This structure makes SQL databases reliable and suitable for applications that require accuracy and consistency.
In SQL systems, data relationships are very important.
Tables are connected using primary keys and foreign keys.
This ensures data integrity and avoids invalid records.
NoSQL databases do not require fixed table structures.
They are designed to handle large-scale and fast-changing data.
Applications such as social media, real-time analytics, and big data systems often use NoSQL databases.
SQL databases are commonly used in banking, finance, e-commerce, and enterprise applications where data consistency is critical.
NoSQL databases are commonly used where speed, scalability, and flexible data storage are required.