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
Facilitate database programming
Facilitate database organization
Facilitate database design
Facilitate database website
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
True
False
True
False
Entity types
File types
Relationship types
Atrtributes
Storage detailes
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
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
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
True
False
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
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
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
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
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
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
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
True
False
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
True
False
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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