Review:Class ◆An abstraction Describes a group of objects with common: -Properties (attributes) Behavior (operations) Relationships Semantics Class Name Professor name Attributes Professorld Uniqueld create() Operations save() delete() change() Object Oriented Analysis and Design 8Object Oriented Analysis and Design 8  An abstraction  Describes a group of objects with common: ▪ Properties (attributes) ▪ Behavior (operations) ▪ Relationships ▪ Semantics Class Name Attributes Operations Review: Class Professor name ProfessorId : UniqueId create() save() delete() change()