3. BAZE PODATAKA - Obnavljanje 3
Quiz
•
Computers
•
11th Grade
•
Medium
Darko Carić
Used 2+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Čekiraj tvrđenja koja su tačna za relacioni model baze podataka
(moguće je više tačnih odgovora)
RBP se sastoji iz više entiteta.
Tabele su povezane ključevima.
Nije od značaja gde i kako su smeštene tabele.
Informacija iz RBP se dobija postavljanjem upita.
2.
DROPDOWN QUESTION
3 mins • 1 pt
(a) u jednoj tabeli je referenca na (b) druge tabele. Ovo omogućava povezivanje (c) (d) a i formiranje složenih struktura podataka.
3.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
Svaka tabela ima___________________ koji jedinstveno identifikuje svaki red u tabeli. On osigurava da svaki zapis u tabeli bude jedinstven.
4.
DROPDOWN QUESTION
2 mins • 1 pt
Redovi (ili zapisi) predstavljaju pojedinačne instance ili (a) , dok kolone predstavljaju (b) tih entiteta.
5.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
Proces organizovanja podataka u bazi kako bi se smanjile redundancije i poboljšao integritet podataka naziva se?
6.
MATCH QUESTION
2 mins • 1 pt
Terminologija relacionog modela
Naziv kolone u tabeli
Relaciona baza podataka
Skup tabela
Domen
Skup dozvoljenih vrednosti za podatke
Instanca
Red u tabeli
Relacija
Pojedinačna tabela
Atribut
7.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Kada u praksi unosimo NULL vrednost u polje tabele?
(moguće je više tačnih odgovora)
Vrednost postoji, ali nije poznata u trenutku unosa
Vrednost je nedefinisana, nema smisla.
Kad treba da se unese nula.
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