tailieunhanh - Bài giảng Phân tích thiết kế phần mềm: Chương 7 - Trường ĐH Ngoại ngữ - Tin học TP.HCM

Bài giảng Phân tích thiết kế phần mềm: Chương 6 Sơ đồ lớp, cung cấp cho người đọc những kiến thức như: Đối tượng; lớp; thuộc tính; tác vụ; quan hệ. Mời các bạn cùng tham khảo! | 2 28 2019 Content Objects Đối tượng Classes Lớp Attributes Thuộc tính Operations Tác vụ Relationships Quan hệ Binary Association N-ary Association Association Class Aggregation Generalization Creating a class diagram Code Generation 2 1 Object Object Diagram Individuals cá nhân of a system Objects of a system and their relationships links Snapshot of objects at a specific moment in time Alternative notations Object name Class Anonymous objects Attribute Current value no object name Link 3 4 1 2 28 2019 Attribute Syntax Attribute Syntax - Visibility Who is permitted to access the attribute . public everybody - . private only the object itself . protected class itself and subclasses . package classes that are in the same package 5 6 Attribute Syntax - Derived Attribute Attribute Syntax - Name Attribute value is derived from other attributes Name of the attribute age calculated from the date of birth 7 8 2 2 28 2019 Attribute Syntax - Type Attribute Syntax - Multiplicity Type Number of values an attribute may contain User-defined classes Default value 1 Data type Notation Primitive data type no upper limit or 0. Pre-defined Boolean Integer UnlimitedNatural String User-defined primitive Composite data type datatype Enumerations enumeration 9 10 Attribute Syntax Default Value Attribute Syntax Properties Default value Pre-defined properties Used if the attribute value is not set explicitly by the readOnly value cannot be changed user unique no duplicates permitted non-unique duplicates permitted ordered fixed order of the values unordered no fixed order of the values Attribute specification Set unordered unique Multi-set unordered non-unique Ordered set ordered unique List ordered non-unique 11 12 3 2 28 2019 Operation Syntax - Parameters Operation Syntax - Type Notation similar to attributes Type of the return value Direction of the parameter in input parameter When the operation is used a value is expected from this parameter out output parameter After the .