Fichas
database technology
Fichas del conjunto (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
Información
- Descripción
- Fichas sobre database technology, creado por 11cyallop el 11/11/2014.
- Creado por
- 11cyallop · nov 2014
- Actualizado
- 19 feb 2016
- Visitas
- 9
- Valoración