1.) what is a datbase?
a database is a group of related information

2.)what are the types of databases?

Operational Databases:
store information for an organisation to run

Analytical databases:
store information that are taken from other databases

Distributed databases:
are databases that are at local places, such as local work groups at regional offices, branch offices, manufacturing plants, etc.

End-User databases:
are a collection of different files created by users at their workstations

These are some of the types of databases but there are many more