What Is Database

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Q.1a) What is meant by data and information? Define and explain briefly database and types of database? Any unprocessed raw material which stored in computer is called data. Data referred to facts concerning objects and events that could be recorded and stored on computer media. For example, in a salesperson’s database, the data would include facts such as customer name, address, and telephone number. This type of data is called structured data. The most important structured data types are numeric, character, and dates. Structured data are stored in tabular form (in tables, relations, arrays, spreadsheets, etc.) and are most commonly found in traditional databases and data warehouses. Term information means data that have been processed in such a way as to increase the knowledge of the person who uses the data. By adding a few additional data items and providing some structure, we recognize a class roster for a particular course. This is useful information to some users, such as the course instructor and the registrar’s office. Of course, as general awareness of the importance of strong data security has increased, few organizations still use Social Security numbers as identifiers. Instead, most organizations use an internally generated number for identification purposes What is Database? Database is summarize, organized and analyzed collection of logically related data. There is no limitation of size and shape of database it can be of any size and complexity. For example, a salesperson may maintain a small database of customer contacts on personal computer, while an organization or large corporation builds large databases consisting of a lot of gigabytes. A large mainframe computer is used for huge databases. The size of databases in data warehouses is bigger and greater than the all other databases because it contains information more than a petabyte of

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