Karteikarten
database technology
Karten in diesem Stapel (8)
- 1TableStores all the records of a particular catagory
- 2Recordall information about a person or one thing
- 3FieldsOne piece of data about a person or thing
- 4Data typesThere are many types of data types these include; number, currency and date/time
- 5Field lengthsThey usually have default lengths e.g. a password needs a minimum of 6 letters
- 6Primary keySomething to uniquely identify
- 7foreign keyused to link tables together and create a relationship
- 8Referential integrityprevents you from deleting related records
Informationen
- Beschreibung
- Karteikarten am database technology, erstellt von 11cyallop am 11/11/2014.
- Erstellt von
- 11cyallop · Nov 2014
- Aktualisiert
- 19 Feb 2016
- Aufrufe
- 9
- Bewertung