CLASS Diagram Annotations You Need to Know for CSC440

Main Annotation

 

 Type
Picture
 Read from side touching the shape to other side Read from side with no shape to annotated side What happens when one side deleted
Open Diamond A class contains another class
Search Service "has a " query builder Query builder "is part of " the search service When search service is deleted, query builder remains
Closed Diamond One class constructs and owns the other class
Session "has " transactions (plural because of *) A Transaction "is part of " one session When session is deleted, transaction is deleted also.
Big Open Triangle on Solid Line One class IS a type of another class
Account "can be a " checking account or savings account A checking account "is a " Account  
Big Open Triangle on Dotted Line One class realizes (implements or executes) the other
SiteSearch needs someone to implement it, but does not know who implements it Search Service implements (realizes) SiteSearch  
Small Arrow on Solid Line One side contains an instance of the the other side
Cash Dispenser contains a log file instance Log file does not even know Cash Dispenser exists  
Small Arrow on Dotted Line Weak relationship (creates during a method perhaps)
Product Manager somehow uses a Product Product does not know Product Manager exists