Question

What is a database? Why it is use in computer?
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Answer 1

Answer:

Explanation:Databases are basically containers for data. Because a public library stores books, we could also say that a library is a database of books. But strictly defined, databases are computer structures that save, organize, protect, and deliver data. A system that contains databases is called a database management system, or DBM. The typical diagram representation for a database is a cylinder.

Types of Databases

The simplest form of databases is a text database. When data is organized in a text file in rows and columns, it can be used to store, organize, protect, and retrieve data. Saving a list of names in a file, starting with first name and followed by last name, would be a simple database. Each row of the file represents a record. You can update records by changing specific names, you can remove rows by deleting lines, and you can add new rows by adding new lines.

Desktop database programs are another type of database that's more complex than a text database but intended for a single user. A Microsoft Excel spreadsheet or Microsoft Access are good examples of desktop database programs. These programs allow users to enter data, store it, protect it, and retrieve it when needed. The benefit of desktop database programs over text databases is the speed of changing data, and the ability to store large amounts of data while keeping performance of the system manageable.

Relational databases are the most common database systems. They include databases like SQL Server, Oracle Database, Sybase, Informix, and MySQL. The relational database management systems (RDMS) feature much better performance for managing data over desktop database programs. For example, they allow multiple users (even thousands!) to work with the data at the same time, creating advanced security for access to the data. RDBMS systems store data in columns and rows, which in turn make up tables. A table in RDBMS is like a spreadsheet. A set of tables makes up a schema. A number of schemas create a database. Many databases can be created on a single server.

Answer 2

Answer:

A database is an organized collection of data, generally stored and accessed electronically from a computer system.

Database software makes data management simpler by enabling users to store data in a structured form and then access it. It typically has a graphical interface to help create and manage the data and, in some cases, users can construct their own databases by usingdatabase software. So,it is used in computer.

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