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Computer Science

Define a 'database'

An organised collection of data stored in a computer

Define a 'Flat File'

A simple data base where all data is on one table

Define a 'Relational Database'

A database where data is organised into multiple tables.

Define an 'attribute'

Describes the detail/characteristics of an object

Define a 'Primary Key'

A unique identifier for a record in a table, consisting of one or more attributes

Define a 'Composite primary key'

Where a unique identifier must consist of more than 1 attribute

Define a 'Foreign Key'

An attribute that links 2 tables together

Define a 'Secondary key'

An attribute used to build an index for faster searching

Define 'Referential Integrity'

Where no foreign key in one table can reference a non-existent record in a related table

Define a 'Record'

All the info held about a single object( a row in a table)

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