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What is Entity Type

Chapter 155
Encyclopedia of Information Science and Technology, Third Edition
An entity is a non-lexical object that in the real world is identified using a definite description that relates it to other things (e.g., the Country that has CountryCode ‘US’). Typically, an entity may undergo changes over time. An entity type is a kind of entity, e.g., Person, Country. In UML, an entity is called an object, and an entity type is called a class.
Published in Chapter:
A Comparative Review of Data Modeling in UML and ORM
Terry Halpin (INTI International University, Malaysia)
Copyright: © 2015 |Pages: 9
DOI: 10.4018/978-1-4666-5888-2.ch155
Full Text Chapter Download: US $37.50 Add to Cart
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Chapter 100
A Comparison of Data Modeling in UML and ORM
An entity is a non-lexical object that in the real world is identified using a definite description that relates it to other things (e.g., the Country that has CountryCode ‘US’). Typically, an entity may undergo changes over time. An entity type is a kind of entity, for example, Person, Country. In UML, an entity is called an object, and an entity type is called a class.
Published in Chapter: A Comparison of Data Modeling in UML and ORM; From: Encyclopedia of Information Science and Technology, Second Edition
Full Text Chapter Download: US $37.50 Add to Cart
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