
Baze podataka
Quiz
•
Computers
•
12th Grade
•
Practice Problem
•
Hard
Lamija Nicević
Used 1+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koja je svrha dizajna baze podataka?
Stvoriti složene algoritme za obradu podataka.
Svrha dizajna baze podataka je organizirati podatke na učinkovit način za učinkovito pohranjivanje, preuzimanje i upravljanje.
Osigurati da se podaci pohranjuju u jednom formatu datoteke.
Eliminirati potrebu za sigurnosnim kopijama podataka.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Napišite SQL upit za odabir svih zapisa iz tablice pod nazivom 'students'.
SELECT students;
SELECT ALL FROM students;
GET * FROM students;
SELECT * FROM students;
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Što je normalizacija u kontekstu baza podataka?
Normalizacija u bazama podataka je proces organiziranja podataka kako bi se smanjila redundancija i ovisnost.
Metoda za povećanje redundancije podataka
Način za vizualizaciju odnosa u bazi podataka
Tehnika za enkripciju podataka
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Objasnite koncept integriteta podataka.
Integritet podataka je količina podataka pohranjenih u bazi podataka.
Integritet podataka se odnosi na brzinu obrade podataka.
Integritet podataka je tačnost i dosljednost podataka tokom njihovog životnog ciklusa.
Integritet podataka je vizualna reprezentacija podataka u grafikonima.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koje su različite vrste normalizacijskih oblika?
1NF, 2NF, 3NF, 4NF, 6NF
Normalizacija A, B, C, D
1NF, 2NF, 3NF, BCNF, 4NF, 5NF
1NF+, 2NF+, 3NF+, 4NF+, 5NF+
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kako se stvara indeks na koloni u SQL-u?
DODAJ INDEKS index_name U table_name(kolona_name);
KREIRAJ INDEKS index_name NA table_name(kolona_name);
INDEKS index_name NA table_name(kolona_name);
KREIRAJ TABELU index_name NA table_name(kolona_name);
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koja je razlika između primarnog ključa i stranog ključa?
Primarni ključ je vrsta stranog ključa.
Strani ključ može postojati bez primarnog ključa.
Primarni ključ jedinstveno identificira zapise; strani ključ povezuje s primarnim ključem u drugoj tablici.
Primarni ključ može povezati s više tablica.
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