MODELAREA DATELOR - Baze de date
MODELAREA DATELOR - Baze de date
MODELAREA DATELOR - Baze de date
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NORMALIZAREA<br />
Exista o serie <strong>de</strong> reguli care <strong>de</strong>scriu ce<br />
inseamna o structura corecta. Ele <strong>de</strong>finesc<br />
asa numitele forme normale.<br />
Pe baza structurii bazei <strong>de</strong> <strong>date</strong> şi a<br />
<strong>de</strong>pen<strong>de</strong>ntelor rezultate atat din transformare<br />
şi a altor <strong>de</strong>pen<strong>de</strong>nte i<strong>de</strong>ntificate <strong>de</strong><br />
proiectant in analiza <strong>de</strong> sistem se poate face<br />
o operatie numita normalizare: se modifica<br />
structura bazei <strong>de</strong> <strong>date</strong> astfel incat toate<br />
tabelele din aceasta sa fie in forma normala<br />
dorita.<br />
F. Radulescu. Curs: <strong>Baze</strong> <strong>de</strong> <strong>date</strong> 26
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