Types of Databases
Relational Databases
Detailed in Relational Databases
Document Databases
Detailed in Document Databases
Key-Value Databases
Databases that solely use key-value datastructures like dictionaries.
Redis is one such database.
Distributed Databases
Distributed databases are databases that share the storage and querying load of its data across multiple servers. This increases both performance on large datasets and the reliability of the database.
One such example is Cassandra