Database Concepts — Chapter Test

Answer all 5 questions, then submit. You need 60% to pass. Log in to save progress.

Question 1
In the relational model, a row is called a…
ARelation
BAttribute
CTuple
DDomain
Question 2
The DEGREE of a table is the number of…
ARows
BColumns (attributes)
CKeys
DTables
Question 3
Which key is the chosen unique identifier that cannot be NULL or duplicated?
ACandidate key
BPrimary key
CAlternate key
DForeign key
Question 4
An attribute that refers to the primary key of another table is a…
ACandidate key
BAlternate key
CForeign key
DDomain
Question 5
Storing the same data in many files, risking mismatches, is the problem of…
AData redundancy & inconsistency
BEncryption
CNormalisation
DIndexing