ERD_

What entity type is used in the given diagram?

• STUDENT
• DOCTOR
• EMPLOYEE
• COURSE

Which attribute is the MULTI-VALUED ATTRIBUTE?

• EmpID
• Degree
• Age
• Address

Which attribute is the COMPOSITE ATTRIBUTE?

• Degree

• Age

• Salary

• Address

Which attribute is the DERIVED ATTRIBUTE?

• EmpID
• Age
• Name
• Degree

Which attribute is the KEY IDENTIFIER or the PRIMARY KEY?

• EmpID
• Degree
• Name
• Birthday

This symbol indicates _____ relationship.

• zero or one
  zero or one
• zero or many
• one or many
• many to many

_________is a person, place, object, event or concept in the user environment about which company wishes to maintain the data

• attribute
• entity
• relationship
• none of these

Each entity is described by __________.

• entity

• relationship

• none of these

• attribute

This key uniquely identifies each record in an entity.

• Primary Key or Key Identifier

• Foreign Key

• Secondary Key

• Composite Key

Diamond shape is symbol for ?

• Entity

• Cardinality

• Relationship

• Atribut