what is data base?

Answer 1

A database is a collection of logically related data designed to meet the information needs of one or more users.A possible definition is that a database is a collection of records stored in a computer in a systematic way, so that a computer program can consult it to answer questions. For better retrieval and sorting, each record is usually organized as a set of data elements (facts). The items retrieved in answer to queries become information that can be used to make decisions. The computer program used to manage and query a database is known as a database management system (DBMS). The properties and design of database systems are included in the study of information science.

The central concept of a database is that of a collection of records, or pieces of knowledge. Typically, for a given database, there is a structural description of the type of facts held in that database: this description is known as a schema.
The schema describes the objects that are represented in the database, and the relationships among them.

two types of database are
>relational database
>object database

The relational model was introduced as a way to make database management systems more independent of any particular application. It is a mathematical model defined in terms of predicate logic and set theory.The products that are generally referred to as relational databases in fact implement a model that is only an approximation to the mathematical model defined by Codd. The data structures in these products are tables, rather than relations: the main differences being that tables can contain duplicate rows, and that the rows (and columns) can be treated as being ordered.

In the 1990s, attention shifted to object-oriented databases. These had some success in fields where it was necessary to handle more complex data than relational systems could easily cope with, such as spatial databases, engineering data (including software engineering repositories), and multimedia data. Some of these ideas were adopted by the relational vendors, who integrated new features into their products as a result.

Answer 2

A large amount of data stored in a well organized manner
A collection of records or files of information grouped together to help organize data with search facilities

Answer 3

It is a file that contains data. eg: Access is a program. You can create databases using Access by creating a file and entering data to keep track of whatever. You can link it to other programs, print reports, email it to other people, put it on the internet, etc.

Answer 4

A repository for storing data in an organized fashion.

Answer 5

Collection of files and records into a well organized form of tables is called database.

Answer 6

where all the data is kept.

Answer 7

http://en.wikipedia.org/wiki/Database