Business Driven Technology
6th Edition
ISBN: 9780073376905
Author: Paige Baltzan Instructor
Publisher: McGraw-Hill Education
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Chapter 7, Problem 2OC
Program Plan Intro
Entity:
Entity is the basic block for building the data collected about person, place, event, or thing.
- Entities represent attributes that can have multiple instances.
- Entity is about the collection of the information about the place, person, or thing. For example: a patient, a musician, and so on.
- To locate the information in the entity, they have a name, short description about what they are and identifier.
- Identifiers are used to identify each and every individual instance of an entity.
- So, it is the purpose of having identifiers with unique values.
- The Naming of an entity is,
- Entity is described by a singular noun spelled in capital letters.
Example:
The example of an entity is given below:
- STUDENT
- EMPLOYEE
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KeanPerson
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#firstName:String
#lastName: String
KeanAlumni
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Chapter 7 Solutions
Business Driven Technology
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