Featuring-Characterization Instantiation-Materialization: a structural relation that defines the relation a structural relation that defines the relation between the thing and its features. between a class of things and its instances. ■Symbol::△ ■Symbol: Feature:a thing that characterizes a thing. Cylinder Attribute:a feature which is an object. Operation:a feature which is a process (also known as method or service) BoxD Cylinder A VOPDtop.opa 回X Image is in front of Object Cylinder instantiates Cylinder A and Cylinder B. Name Sitation Display Object Box instantiates Box C and Box D. Box C is in front of Box D. Box D is in front of Cylinder B. OPL: Box D is right of Cylinder A. Object Image features Name,Situation and Process Display. Cylinder A is left of Cylinder B. cLe国 ③cLco Generalization-Specialization: Structural links:an example a structural relation that defines the relation Camera between a general things and its specializations. 屋 Also known as gen-spec; Lens holds Case Capturing- is attached-to ■induces inheritance Medium uses Analog- Electronic- ■Symbol:△ Camera Camera Focal- Operation- length mode An object generalizes objects and process-processes. Photographic Magnetic uses Film Tape Case,Lens and Capturing-Medium are parts of the object Camera. "uses"is a structural relation(association).It has specializations. ③ctGe ③ctGo 国+ - Feature: a thing that characterizes a thing. Attribute: a feature which is an object. Operation: a feature which is a process (also known as method or service). OPL: Object Image features Name, Situation and Process Display. a structural relation that defines the relation between the thing and its features. Symbol: Featuring-Characterization Display + - Object Cylinder instantiates Cylinder A and Cylinder B. Object Box instantiates Box C and Box D. Box C is in front of Box D. Box D is in front of Cylinder B. Box D is right of Cylinder A. Cylinder A is left of Cylinder B. a structural relation that defines the relation between a class of things and its instances. Symbol: a structural relation Instantiation n t - that defines the relation that d Materialization: A B C D is in front of + - a structural relation that defines the relation between a general things and its specializations. Also known as gen-spec; induces inheritance Symbol: Generalization-Specialization: An object generalizes objects and process - processes. + - Case, Lens and Capturing-Medium are parts of the object Camera. “uses” is a structural relation (association). It has specializations. Structural links: an example Lens Case Camera Capturing￾Medium Electronic￾Camera Analog- Camera is attached-to Magnetic Tape Photographic Film uses uses uses Operation￾mode Focal- length holds