ER Diagrams 2

An attribute which consists of a group of attributes is called ______?

• Composite attributes

• stored attributes

• Multi-valued attributes

• simple attributes

Which is not an example of a strong entity type?

• course

• department

• student

• student_id

If employee is the entity type then Michael, smith is the entity_______?

• Characteristics

• Field

• Instance

• Attributes

A meaningful association between entity types is _______?

• Relationship type

• Entity identifier

• Associative entity

An entity type whose existence depends on another entity type is called _________ entity?

• strong entity type

• dependent entity type

• weak entity type

A person name, birthday and social security number are all examples of _______?

• Entities

• Attributes

• Relationships

• Descriptors

An example of a multi-valued attribute might be ______?

• Student_Address

• College_Degree

• Student_GPA

• ID_Number

_________ specifies the number of instances of one entity that can or must be associated with each instance of another?

• Cardinality constraint

• Multi-valued attribute

• participation constraint

The most common type of relationship encountered in data modelling is __________ relationship?

• binary

• unary

• ternary

• quartenary

An attribute associated with a relationship type is called

• single valued attribute

• key attribute

• descriptive attribute

• simple attribute