what is the need of a database? mention any two points
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A database is a system for storing and taking care of data (any kind of information).
A database engine can sort, change or serve the information on the database. The information itself can be stored in many different ways - before digitalcomputers, card files, printed booksand other methods were used. Now most data is kept on computer files.
A database system is a computer program for managing electronic databases. A very simple example of a database system would be an electronic address book.
The data in a database is organized in some way. Before there were computers, employee data was often kept in filing cabinets. There was usually one card for each employee. On the card, information such as the date of birth or the name of the employee could be found. A database also has such "cards". To the user, the card will look the same as it did in old times, only this time it will be on the screen. To the computer, the information on the card can be stored in different ways. Each of these ways is known as a database model. The most commonly used database model is called relational database model. It uses relations and sets to store the data. Normal users talking about the database model will not talk about relations, they will talk about database tables.
A database engine can sort, change or serve the information on the database. The information itself can be stored in many different ways - before digitalcomputers, card files, printed booksand other methods were used. Now most data is kept on computer files.
A database system is a computer program for managing electronic databases. A very simple example of a database system would be an electronic address book.
The data in a database is organized in some way. Before there were computers, employee data was often kept in filing cabinets. There was usually one card for each employee. On the card, information such as the date of birth or the name of the employee could be found. A database also has such "cards". To the user, the card will look the same as it did in old times, only this time it will be on the screen. To the computer, the information on the card can be stored in different ways. Each of these ways is known as a database model. The most commonly used database model is called relational database model. It uses relations and sets to store the data. Normal users talking about the database model will not talk about relations, they will talk about database tables.
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Database is a collection of related data and data is a collection of facts and figures that can be processed to produce information. A database management system stores data in such a way that it becomes easier to retrieve, manipulate, and produce information. REASONS: 1. It provides more security 2. Stores large amount of data. Hope it helps....
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