What is Database?

 ?What is Database

A Database is an integrated collection of logically related records or files that is stored in a computer system which

consolidates records previously stored in separate files into a common pool of data records that provides data for

many applications. The structure is achieved by organizing the data according to a database model. The model that

is most commonly used today is the relational model. Other models such as the hierarchical model and the network

model use a more explicit representation of relationships.

Often abbreviated DB. A collection of information organized in such a way that a computer program can quickly

select desired pieces of data. You can think of a database as an electronic filing system.

Traditional databases are organized by fields, records, and files. A field is a single piece of information; a record is

one complete set of fields; and a file is a collection of records. For example, a telephone book is analogous to a file. It

contains a list of records, each of which consists of three fields: name, address, and telephone number.

What is metadata?

Metadata describes how and when and by whom a particular set of data was collected, and how the data is

formatted. Metadata is essential for understanding information stored in data warehouses and has become

increasingly important in XML-based Web applications.

Source: Wikipedia