14 Questions
Which term refers to the total number of tuples or rows present in a relation?
Cardinality
What does a relational database schema consist of?
Relation schemas and integrity constraints
What is a relation instance or relation state?
A set of tuples at a given moment of time
Which company first implemented the relational model commercially?
IBM
Who is credited with inventing the relational data model?
Ted Codd
What is a tuple in the context of a relational database?
A row
What is the degree or arity of a relation?
The number of attributes in a relation schema
The degree of this relation student is ______
6
The cardinality of this student relation is ______
three
A relational database schema is a set of ______ and a set of integrity constraints
relation schemas
Ted Cord invented the ______ data model in 1970
relational
The first commercial implementations of the relational model were by ______ and IBM
Oracle
A ______ is a set of possible values that you can input for an attribute
domain
A relation schema is made up of a relation name and a list of ______
attributes
Test your knowledge on the history of the relational data model with this quiz. Learn about its introduction in 1970 and the key individuals involved in its development.
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