Key Concepts in System Design and User Interface

These flashcards cover key concepts related to system design, user interface principles, testing, and change management.

Functional Models

Show what the system should do, including functions, processes, and user activities.

Use Case Diagrams

Diagrams that show who interacts with the system and what they do.

Structural Models

Model that shows how the data and objects are organized in the system.

Class Diagrams

Diagrams that display classes, attributes, operations, and their relationships.

Behavioral Models

Model that shows how the system behaves over time and interactions between users, systems, and objects.

Sequence Diagrams

Diagrams that show time-ordered message exchanges between objects.

State Machine Diagrams

Diagrams that illustrate how an object changes states in response to events.

User Interface (UI) Structure

Divided into navigation, input, and output mechanisms within the Human-Computer Interaction Layer.

6 Principles of Good User Interface Design

Guidelines including layout, content awareness, aesthetics, user experience, consistency, and minimal user effort.

Navigation Structure Design

Designing how users will navigate through screens effectively.

Input Design

Focus on capturing data efficiently, minimizing keystrokes, and validating input requirements.

Output Design

Understanding user needs for reports and preventing information overload.

Heuristic Evaluation

Usability assessment method where experts check for adherence to usability principles.

Unit Test

Testing conducted on a single class or method to ensure its functionality.

Lewin’s 3-Step Change Model

A framework for implementing change: Unfreeze, Move, Refreeze.

Conversion Types

Strategies for system conversion, including direct, parallel, pilot, and phased conversions.

Change Management

The process of managing resistance to change and implementing strategies effectively.

Post-Implementation Activities

Support, maintenance, and assessment activities following the implementation of a system.