
Baze de date
Quiz
•
11th Grade - University
•
Practice Problem
•
Hard
Alla Turcanu
Used 95+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Informațiile dintr-o bază de date sunt păstrate sub formă de:
înregistrări
imagini
diagrame
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Modelul care presupune că datele sunt structurate arborescent, accesul la date se face coborând din vârful ierarhiei pe nivele până la subordonatul dorit se numește
conceptual
ierarhic
în rețea
relațional
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Modelul care presupune că datele sunt structurate în ierarhii dar fiecare dată, fiecare membru poate avea oricăți membri superiori se numește
conceptual
ierarhic
în rețea
relațional
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Modelul considerat cel mai flexibil model conceptual de organizare a datelor se numește
conceptual
ierarhic
în rețea
relațional
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Baza de date relațională este formată din:
nivele
tabele
noduri
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cîmpul ale cărui valori identifică fiecare înregistrare a tabelului se numeşte
cheie primară
cheie secundară
cheie unică
cheie multiplă
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cîmpul ale cărui valori se repetă se numeşte
cheie primară
cheie secundară
cheie unică
cheie multiplă
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