Interaction Coupling is the measure of the number of message types an Inheritance Coupling is the degree to which a subclass actually needs the Operation Cohesion is the degree to which an operation focuses on a single Class Cohes
1. Interaction Coupling is the measure of the number of message types an
object sends to another object, and the number of parameters passed with these message types. Good interaction coupling is kept to a minimum to avoid possible change ripples through the interface.2. Inheritance Coupling is the degree to which a subclass actually needs the
features attributes and operations it inherits from its base class. One minimize the number of attributes and operations that are unnecessarily inherited. Cohesion is the measure to which an element attribute, operation, or class within a package contributes to a single purpose. For object-oriented design, three types of cohesion are used.1. Operation Cohesion is the degree to which an operation focuses on a single
functional requirement. Good design produces highly cohesive operations.2. Class Cohesion is the degree to which a class is focused on a single
requirement.3. Specialization Cohesion address the semantic cohesion of inheritance.
Inheritance definition should reflect true inheritance rather than sharing syntactic structure. Refinement Refinement is also known as the process of elaboration. Abstraction complements refinement as they enable a software engineer to specify the behavior and data of a class or module yet suppressing low levels of detail. It helps the software engineer in creating a complete design model as the design evolves. Refinement helps the software engineer to uncover the details as the development progresses. Refactoring Refactoring is a technique that simplifies the design of the component without changing its function and behavior. It is a process of changing the software so that the external behavior remains the same and the internal structures are improved. During refactoring, the design model is checked for redundancy, unused design elements, inefficient or unnecessary algorithms, poorly constructed or inappropriate data structures or any other design failures. These are corrected to produce a better design.4.1.2 The Design Model
Parts
» | Komputasi | Suatu Permulaan
» Quality Focus Process Method Tools
» What is quality? How do we define quality?
» Software Quality Characteristics of a Well-engineered Software
» Software Quality Assurance Activities Formal Technical Reviews
» Types of Software Process Models
» Understanding Systems | Komputasi | Suatu Permulaan
» End-users Understanding People in the Development Effort
» What is documentation? Criteria for Measuring Usability of Documents
» Abstraction Encapsulation Review of Object-oriented Concepts
» Modularity Hierarchy Review of Object-oriented Concepts
» Project Assignment Object-oriented Process Model
» Modeling Activity Unified Modeling Language UML
» UML Baseline Diagrams Unified Modeling Language UML
» Requirements Engineering Concepts | Komputasi | Suatu Permulaan
» Inception Requirements Engineering Tasks
» Elaboration Negotiation Requirements Engineering Tasks
» Specification Validation Requirements Engineering Tasks
» Management Requirements Engineering Tasks
» Scenario Modeling Requirements Analysis and Model
» Requirements Model Validation Checklist
» InvoiceNumber : Numeric Here, an attribute named InvoiceNumber contains a numeric value.
» Ternary association which is a relationship of three or more objects of
» The Analysis Model Analysis Model Validation Checklist
» Requirements Traceability Matrix RTM
» Requirements Metrics | Komputasi | Suatu Permulaan
» The Design Model Design Engineering Concepts
» Describing the Package Diagram Developing the Architectural Design
» Software Architecture Validation Checklist
» Developing the Data Design Model
» Report Design Interface Design
» Forms Design Interface Design
» Basic Component Design Principles Component-level Design Guidelines
» Component Diagram Developing the Software Component
» Project Assignment Design Model Validation Checklist
» Mapping the Design Deliverables to the Requirements Traceability Matrix Design Metrics
» Creating the Data Design Model Creating the Interface Design Creating the Control Design
» Project Assignment Programming Standards and Procedures
» Using Pseudocodes Control Structure Guidelines Documentation Guidelines
» Implementing Packages | Komputasi | Suatu Permulaan
» Abstract Classes Implementing Controllers
» Interfaces Why do we use Interfaces?
» Interface vs. Abstract Class Interface vs. Class Creating Interfaces
» Relationship of an Interface to a Class Inheritance among Interfaces
» Implementing Java Database Connectivity JDBC
» AWT GUI Components Implementing the Graphical User Interface
» Layout Managers Implementing the Graphical User Interface
» Controlling the Version of the Software
» Introduction to Software Testing
» White-Box Testing Techniques Software Test Case Design Methods
» Black-Box Testing Techniques Software Test Case Design Methods
» Testing your Programs | Komputasi | Suatu Permulaan
» Test-driven Development Steps Test-driven Development Methodology
» Testing Java Classes with JUnit
» Testing the System | Komputasi | Suatu Permulaan
» Mapping the Software Testing Deliverable to the RTM Test Metrics
» Project Assignment Software Project Management
» Problem Identification and Definition
» The Project Team Structure Project Responsibility Chart
» Project Work Breakdown Structure WBS
» Work Breakdown Schedule Format
» Size-oriented Metrics- Lines of Codes LOC Function-Oriented Metrics: Function Points FP
» Project Estimations | Komputasi | Suatu Permulaan
» The Risk Table Risk Management
» Risk Identification Checklist Risk Management
» Baseline Software Configuration Tasks
» Writing the Project Plan Project Assignment Case Tools
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