
SQL quiz
Authored by Bernadett Tornai
Other
1st - 5th Grade
Used 2+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Melyik paranccsal távolítható el a tábla az adatbázisból?
CREATE
DROP table
ALTER table
HAVING
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Melyik megszorítás(ok) segítségével biztosítható, hogy az oszlop ne maradjon üres?
NOT NULL
UNIQUE
PRIMARY KEY
EGYIK SEM
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Az elsődleges kulcsnak lehet NULL értéke a táblában?
IGEN
NEM
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
SELECT * FROM cars WHERE Doors > 3
Mekkora értéket ad vissza?
1
2
3
4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
CREATE TABLE employee (id INT, name VARCHAR(20), salary NOT NULL);
INSERT INTO employee VALUES (1005, Rach, 0);
INSERT INTO employee VALUES (1007, Ross, );
INSERT INTO employee VALUES (1002, Joey, 335);
Valamelyik fenti INSERT utasítás hibásan van megadva, Melyik az?
Insert into employee values (1005,Rach,0);
Insert into employee values (1002,Joey,335);
Insert into employee values (1007,Ross, );
EGYIK SEM
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Az adott lekérdezésben melyik kulcsszót kell beilleszteni?
INSERT INTO employee _____ (1002, Joey, 2000);
table
values
relation
field
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A NOT NULL megszorítás arra kényszeríti az oszlopot, hogy ne fogadjon el üres értékeket,
IGEN
NEM
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