Quiz # 2 Dec 11 to 12, 2014
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Which of the following tool is used to design conceptual database design?
*This model is independent of any tool
A ____ entity has a primary key that is partially or totally derived from the parent entity in the relationship.
A patient can be an outdoor or indoor. Analyze this statement and tell what type of constraint will be applied on patient?
Which of the following might be represented with a single-valued attribute?
person's phone number
employee's educational background
*computer's processor speed
Which tool is used to identify relationship between entities?
Cross Reference Matrix
Relational Calculus is a _____________ relational data manipulation language.
Which of the following provides us the facility to add properties of one entity to another entity automatically?
Identify the INCORRECT statement.
Relational data model is based on mathematics
*In relational data model there is no manipulation language defined
Relational data model is simple
We can test mathematically anything before using it in RDM and it will work fine
If A -> B and A -> C, then A -> BC The Inference Rule applies is;
Unary operations involves
*Only one relation
Only two relations
More than two relations
Not more than five relations
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