Datubāzes pieprasījumi un funkcijas

Quiz
•
Computers
•
12th Grade
•
Easy
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9 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kam dommata 'execute' funkcija?
DB pieprasījumu izveidei
Darbību apstiprināšanai
DB savienojuma aizvēšanai
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kam domāta 'commit' funkcija?
DB darbības apstiprināšanai
Savienojuma izveidei ar DB
Datu dzēšanai
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ko darīs šis pieprasījums?
SELECT * FROM users
Izvēlēsies visus ierakstus no users tabulas
Dzēsīs datus
Aizvers savienojumu
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ko darīs šis pieprasījums?
DELETE FROM preces WHERE skaits = 0
Meklēs elementus
Izdzēsīs visus ierakstus kur 'skaits' kolonnas vērtība būs 0
Veidos relāciju
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Kura funkcija veido savienojumu ar DB?
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Ar kāda pieprasījuma palīdzību mēs varam modificēt datus DB tabulā? (raksti lieliem burtiem)
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Vai pieprasījums ir veikts pareizi?
UPDATE tabula SET vertiba = 10 WHERE skolens= Jānis
Nē
Jā
8.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Kāds pieprasijums norāda saistību starp elementiem?
FOREIGN KEY(id) __________ lietotaji(id)
(atbildi raksti lieliem burtiem)
9.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Kādas atslēgas ir datubāzēm?
FOREIGN
MYSTIC
PRIMARY
FANTASTIC
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