the different types of databases:
single user database: supports only one user at a time.
desktop database: a single user database that runs on a personal computer
multiuser database: supports multiple users at one time.
workgroup database: a multiuser database that supports a small number of users (50 or less)
enterprise database: a multiuser database that supports a large number of users (50+)
centralized database: supports data located at a single site.
distributed database: supports data distributed across several different sites
operational/transactional/production database: for day-to-day operations
data warehouse: stores data used to generate info required to make tactical or strategic decisions