Answer: database
Explanation: In simple words, an organised collection of data that is stored generally in a computer and can be accessed in various ways is called databases. These systems stores complex data which are developed using formal designs and requires technical modelling skills.
Databases can be categorized into four categories that are text database, desktop database, relation database and object oriented database. Different organisation use different database as per the nature of operations, sometimes a single organisation use more than one type of database.