slide1 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Redundanz und referentielle Integrität PowerPoint Presentation
Download Presentation
Redundanz und referentielle Integrität

Loading in 2 Seconds...

play fullscreen
1 / 12

Redundanz und referentielle Integrität - PowerPoint PPT Presentation


  • 154 Views
  • Uploaded on

Redundanz und referentielle Integrität. Redundanz Beseitigung von Redundanz Referentielle Integrität. Udo Matthias Munz u.munz@gws-loerrach.de. Redundanz. Redundanz. Redundanz. 115. Telefonnr. Franz. Faktum. Objekt. Wert. Eigenschaft. 115. Telefonnr. Franz. Redundanz. Objekt.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

Redundanz und referentielle Integrität


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Redundanz und

referentielle Integrität

Redundanz

Beseitigung von Redundanz

Referentielle Integrität

Udo Matthias Munz u.munz@gws-loerrach.de

slide4

Redundanz

115

Telefonnr

Franz

slide5

Faktum

Objekt

Wert

Eigenschaft

115

Telefonnr

Franz

slide6

Redundanz

Objekt

Wert

Eigenschaft

115

Telefonnr

Franz

1 Faktum darf nur einmal abgelegt sein

1 Änderung in der Realität

erfordert nur 1 Änderung in der Datenbank

slide12

Referentielle Integrität

Udo Matthias Munz u.munz@gws-loerrach.de