A database is an organized collection of data. It is the collection of schemas, tables, queries, reports, views, and other objects. The data are typically organized to model aspects of reality in a way that supports processes requiring information, such as modelling the availability of rooms in hotels in a way that supports finding a hotel with vacancies.

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The various reasons a database is important are −Manages large amounts of data: A database stores and manages a large amount of data on a daily basis. This would not be possible using any other tool such as a spreadsheet as they would simply not work.Accurate: A database is pretty accurate as it has all sorts of built-in constraints, checks, etc. This means that the information available in a database is guaranteed to be correct in most cases.Easy to update data: In a database, it is easy to update data using various Data Manipulation languages (DML) available. One of these languages is SQL.Security of data: Databases have various methods to ensure the security of data. There are user logins required before accessing a database and various access specifiers. These allow only authorized users to access the database.Data integrity: This is ensured in databases by using various constraints for data.


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Data integrity in databases makes sure that the data is accurate and consistent in a database.Easy to research data: It is very easy to access and research data in a database. This is done using Data Query Languages (DQL) which allow searching of any data in the database and performing computations on it.