Flashcards

databases

Ed Nogg Inglês 8 flashcards

Flashcards do conjunto (8)

1What is a database?It is a key computing skill to be able to organise data, create databases and control data using query languages.
2Benefits of computer databasesthey make it easy to store information so it is quick and easy to find.
3What are threats to data secruity
4What is a flat- file databasesA flat-file database is a database of just one table.
5What is an entityAn entity is any item that has its attributes stored as data. An entity could be anything, eg a book, a person, a film, a country or a football team.
6What is an AttributeThe details about entities are called attributes. A person is an entity with attributes including age, height and nationality, among many others.
7How are databases organisedentities - each recorded item
attributes - details about the entity
field - columns used to capture attributes
record - one row of details about an entity
table - a set of fields and records
primary key - unique number for an entity
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