DDWD2483 - Chapter 1

A database is a collection of related data organized in a structured way.

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In a relational database, data is always stored in a single flat file

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A DBMS (Database Management System) is software that enables the creation, management, and use of databases.

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The DBMS stores data efficiently with little wasted space

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Entities are objects such as people, place, thing, concept or event about which data can be collected

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An attribute is a piece of data that describes an entity

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Data redundancy waste space because you are storing different type of data in the same place

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An entity is also defines as attribute

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An entity is also defines as attribute

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Data independence refer to the correctness and completeness of the data in a database

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