There are many types of Databases available. Please check, research and chose right data store based on business need.
Relational DBMS: Oracle, MySQL
Key-value stores: Redis
Document stores: MongoDB
Graph DBMS: Neo4J
Time Series DBMS: InfluxDB, Graphite
Object oriented DBMS
Search engines: Elasticsearch
Wide column stores: Cassandra, HBase
Native XML DBMS
Programming paradigm: We can’t do everything with one programming language. Please chose right language based on need.