[Database/Hackerrank] Relational Algebra - 3

Relational Algebra - 3

Which is a join condition contains an equality operator?

=> 1. Equijoins

 

Relational Algebra - 4

In precedence of set operators the expression is evaluated from:

=> 2. Left to right

 

Database Query Languages

Using which language can a user request information from a database ?

=> 1. Query

 

Procedural Language

Which one of the following is a procedural language ?

=> 3. Relational algebra

 

Relations - 1

The_____ operation allows the combining of two relations by merging pairs of tuples, one from each relation, into a single tuple.

=> 2. Join

 

Relations - 2

The result which operation contains all pairs of tuples from the two relations, regardless of whether their attribute values match.

=> 2. Cartesian product