- Data warehouses
A central repository for data, a data warehouse is a type of database specifically designed for fast query and analysis.
- NoSQL databases
A NoSQL, or nonrelational database, allows unstructured and semi structured data to be stored and manipulated (in contrast to a relational database, which defines how all data inserted into the database must be composed). NoSQL databases grew popular as web applications became more common and more complex.
- Graph databases
A graph database stores data in terms of entities and the relationships between entities.
OLTP databases. An OLTP database is a speedy, analytic database designed for large numbers of transactions performed by multiple users.
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