
Test 1 BD
Quiz
•
Instructional Technology
•
9th - 12th Grade
•
Practice Problem
•
Medium
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Selectați modelul de organizare a BD care permite reprezentarea datelor în entități și corelații dintre ele:
Ierarhic
Rețea
Relațional
2.
MATCH QUESTION
1 min • 4 pts
Stabiliți legătura dintre noțiune și descriere:
câmp în care nu sunt permise repetări
Relație
utilizată ca cheie primară în alt tabel
Cheie secundară
un obiect distinct inclus într-o BDR
Entitate
este o asociație între entitățile BDR
Cheie primară
3.
FILL IN THE BLANK QUESTION
1 min • 2 pts
Completați spațiile libere:
Legatura dintre entități se realizează prin propagarea ... mecanism ce permite stabilirea ... dintre ele
4.
DRAG AND DROP QUESTION
3 mins • 5 pts
Înregistrați informația necesară din imagine
Entitate: (a)
atribut cheie primară: (b)
Valoarea atributului selectat: (c)
5.
MULTIPLE SELECT QUESTION
45 sec • 3 pts
Selectați tipurile de relații posibile între entitățile BDR:
1:1
1:n
1:l:u
n:m
x:y
6.
DRAG AND DROP QUESTION
1 min • 2 pts
Completați spațiile libere:
BDR este formată din unul sau mai (a) tabele (b) între care se pot stabili (c) .
7.
LABELLING QUESTION
2 mins • 3 pts
Determinați nivelul de reprezentare pentru fiecare poziție:
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