Hey, are you aware of the entity-relationship model (ER)? Try this interesting 'ER diagram' quiz and see how much you can score on this test. This model is used to describe interrelated things of interest in a specific domain of knowledge. If you think you have a good understanding of this topic, then this quiz will be very useful in testing your knowledge. So, get ready and start answering. Good luck to you!
True
False
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Facilitate database programming
Facilitate database organization
Facilitate database design
Facilitate database website
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Describe the structure of a database and the associated insert and update transactions
Describe the structure of a database and the associated retrieval and update transactions
Describe the structure of a database and the associated retrieval transactions
None of the above
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True
False
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True
False
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Entity types
File types
Relationship types
Atrtributes
Storage detailes
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An instance of an Entity type that is uniquely identifiable
An instance of a DBA type that is uniquely identifiable
An instance of a type that is uniquely identifiable
None of the above
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An entity that is not existance-dependent on some other entity type
An Entity that characterizes a DBMS
An instance that is existence dependent on some other entity type
None of the above
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An entity that is not existance-dependent on some other entity type
An Entity that characterizes a DBMS
An instance that is existance dependent on some other entity type
All of the above
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True
False
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A set of values that might be assigned to an attribute.
Is a property of an entity or a relationship type
A set of numbers and values
None of the above
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A set of values that might be asigned to an atribute
Is a property of an entity or a relationship type
Is a set of numeric and database values
None of the above
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An attribute that represents a value that is derivable from a related atrribute or set of atributes, not necessarily in the same entity
An attribute that holds multiple values for a single component
An attribute that cannot be further divided into sub-attributes
An atribute composed of multiple components each with individual existance
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An attribute that represents a value that is derivable from a related atrribute or set of atributes, not necessarily in the same entity
An attribute that holds multiple values for a single component
An attribute that holds a single value for a single entity
An atribute composed of multiple components each with individual existance
An atribute composed of a single component with an independent existance
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An attribute that represents a value that is derivable from a related atrribute or set of atributes, not necessarily in the same entity
An attribute that holds multiple values for a single component
An attribute that holds a single value for a single entity
An atribute composed of multiple components each with individual existance
An atribute composed of a single component with an independent existance
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An attribute that represents a value that is derivable from a related atrribute or set of atributes, not necessarily in the same entity
An attribute that holds multiple values for a single component
An attribute that holds a single value for a single entity
An atribute composed of multiple components each with individual existance
An atribute composed of a single component with an independent existance
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An attribute that represents a value that is derivable from a related atrribute or set of atributes, not necessarily in the same entity
An attribute that holds multiple values for a single component
An attribute that holds a single value for a single entity
An atribute composed of multiple components each with individual existance
An atribute composed of a single component with an independent existance
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True
False
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Uniquely identifies each occurance of an entity type
Is equivalant with a composite key
Is the candidate key selected to be a primary key
All of the above
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True
False
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Is always 1
The number of participating entities in a relationship
The number of representations in a relationship
Is always 0
Is always 0
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