Introduction to Method Engineering - Examples of Method, Technique and Notation and Procedure
3 important questions on Introduction to Method Engineering - Examples of Method, Technique and Notation and Procedure
(1) What is ERD, (2) what does it show, (3) for what is it used and (4) what are its symbols?
Entity-relationship diagram.
Shows the model of the structure of a database, expressed in an ERD.
Used for modeling data for information systems.
Symbols:
–entity
–relationship
–attribute
Shows the model of the structure of a database, expressed in an ERD.
Used for modeling data for information systems.
Symbols:
–entity
–relationship
–attribute
What does a Class diagram show and for what is it used?
Shows the model of the stucture and interaction of an application, expressed in a class diagram.
Used for data modeling and for functions of classes.
What does a Use Case Diagram show and for what is it used?
Shows the model of the functionality of an application, expressed in a use case diagram.
Used to represent functionality provided by a system in terms of actors and dependencies.
Used to represent functionality provided by a system in terms of actors and dependencies.
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