Fichas
Sin título
Fichas del conjunto (11)
- 1flat file databaseall data is contained in one table/file
- 2linked table(aka relational database)- two or more files are linked together. reduces unnecessary duplication of data
- 3primary keyfield which is a unique identifier for each record. a file may have only one primary key
- 4foreign keythe primary key from another file, used to link files
- 5relational databaseavoids data duplication (by using linked tables where appropriate) and reduces error in data entry (by using suitable validation techniques).
- 6basic field typesinclude, text, numeric, date, time, and graphic.
- 7object(aka container) can contain graphic, audio, video, etc
- 8linkcontains a hyperlink
- 9calculationcontains a formula to calculate its contents from another other data in the record.
- 10Booleanstores yes/no or true/false
- 11—
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- Descripción
- Fichas sobre Sin título, creado por kevin baker el 13/09/2017.
- Creado por
- kevin baker
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