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SQL & NoSQL Engines Quiz Questions
A sample of the 10 questions below — instant scoring and an explanation for every answer. No sign-in required to play.
Question 1
What does the SQL `JOIN` clause do?
ACreates a new database
BEncrypts table data
CCombines rows from two or more tables based on a related column
DDeletes rows from a table
Question 2
What does SQL stand for?
AStructured Query Language
BSimple Query Logic
CServer Query Language
DSequential Query Language
Question 3
What is a primary key in a relational database?
AA type of index only
BA column (or set of columns) that uniquely identifies each row in a table
CA foreign table reference
DA column that can have duplicate values
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