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.dsy:it. : Powered by vBulletin version 2.3.1 .dsy:it. > Didattica > Corsi A - F > Basi di dati ~ informatica triennale > il concetto di strade
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middu
.arcimaestro.

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il concetto di strade

vorrei capire se il concetto di strada può essere rappresentato da una relazione ricorsiva.

11-01-2009 20:05
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antares85
.illuminato.

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mi associo, ci avevo pensato, ci sto ragionando un pò su ma non ne vengo a capo...

27-01-2009 15:27
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lordghost
Black Lord

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a mio parere si, o meglio è come l'ho fatto io. Per esigenze tecniche ho anche optato per una relazione "simmetrica", cioè se A viene collegato con B anche B deve essere collegato con A in modo tale che poi esaminando A trovo B come corrispondenza e viceversa. Spero sia utile, non so se possa infrangere qualche regola, se si qualche guru me lo faccia notare.

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27-01-2009 18:48
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antares85
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io pensavo a una roba del tipo:

A ha B e B ha A

che ne dite?

28-01-2009 09:23
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antares85
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up

10-02-2009 09:21
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