Ce caracteristici are o cheie primara?

Quiz 14 Creare

Quiz
•
Computers
•
Professional Development
•
Medium
Lucian Lazar
Used 9+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Identifica unic fiecare inregistrare
Nu suporta null
Poate fi setata pe o coloana sau pe o combinatie din mai multe coloane
Toate celelate variante
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce caracteristici are o cheie straina?
Identifica unic fiecare inregistrare
Nu suporta null
Poate fi setata pe o coloana sau pe o combinatie din mai multe coloane
Referentiaza o cheie primara sau cheie cu valori unice din alta tabela
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Care sunt caracteristicile metadatelor?
Sunt date despre date
Sunt date despre obiectele din baza de date
Sunt stocate in dictionarul bazei de date
Toate celelate variante
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In ce view Oracle gasim informatii despre tabelele userului care este conectat?
USER_TABLES
TABLES
MY_TABLES
DATABASE_TABLES
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In ce view MySQL gasim informatii despre coloanele tabelelor din baza de date?
USER_COLUMNS
USER_TAB_COLS
COLUMNS
TABLE_COLUMNS
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cum se numeste schema care tine informatii despre tabele in MySQL, SQL Server si Postgres?
INFORMATION_SCHEMA
METADATA
USER_TABLES
DATABASE_INFO
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Care este comanda cu care vedem toate colectiile definite in Mongo?
DB
SHOW COLLECTIONS
FIND COLLECTIONS
FIND
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