Requirements Management and Use Cases Training

• Introduction to Requirements Management
• Problem Analysis and Understanding user needs
• Use Cases
• Use Case formats
• Scope Management
• Refinement of System Definition
• Traceability to guarantee that the right system is being built

No prerequisites are needed for this course.

Duration

Two days.

Outline of Requirements Management and Use Cases Training 1. Chapter 1 Introduction

• Topics
• What is a requirement?
• Types of requirements
• Important requirement concepts
• Requirement levels
• Requirement Categories
• What is requirements management?
• The cost of requirement errors
• The game plan towards building quality software
• Development Process
• The Rational Unified Process
• Inception Phase
• Example of High-Level Requirements
• Example of Non-Functional Requirements
• Elaboration Phase
• Example of a Use Case Diagram
• Construction Phase
• Software Development Life Cycle with the RUP
• Requirement Gathering Roadmap
• The roadmap
• Step 1 Analyze the problem
• Step 2 Understand User Needs
• Step 3 Define the system
• Step 4 Manage the scope
• Step 5 Refine the system definition
• Step 6 Manage changing requirements

2. Chapter 2 Problem Analysis and Understanding User Needs

• What we plan to accomplish
• Problem Analysis Steps
• Analysis Steps
• Stakeholders
• Definition of Actors
• Bring out the requirements
• Interviewing
• Step A: Interview every stakeholder
• Step B: Requirements Workshop
• Requirements Workshop
• Organizing requirement workshop
• Brainstorming
• Brainstorming- Idea reduction
• Documentation Analysis & Focus Groups
• Interface analysis & Observation
• Prototyping
• Surveys/Questionnaires
• Step C: Identify Constraints
• Example - Given scenario
• Example (cont d)
• Registration system Problem statement
• Registration system Problem statement(cont d)
• List the stakeholders and users in the scenario
• List the actors
• Identify the constraints in the scenario
• Creating a constraint list

3. Chapter 3 Vision Document & Managing scope

• Topics - cont d
• Vision document - Objectives
• Vision document - Scope
• Vision document - References
• Vision document - Positioning
• Vision document - Positioning (cont d)
• Vision document - User Description
• Vision document - Product Overview
• Vision document - Feature Attributes
• Vision document - Product Features
• Vision document - Constraints
• Vision document - Quality Ranges
• Vision document - Precedence and Priority
• Vision document - Other Product Requirements
• Vision document - Documentation Requirements
• Example of Vision document
• Managing Scope
• Define a baseline
• Example of itemizing list of processes or use cases
• Setting priorities
• Example - Setting priorities
• Assessing effort
• Example - Assessing effort
• Adding the risk element
• Example - risk element
• Get customer agreement on scope
• Use iterative development process
• Plan Change Request (PCR)

4. Chapter 4 Use Case Concepts

• What are Use Cases?
• Benefits of Use Cases
• Use-Case Modeling
• An use case is a collection of scenarios
• To Use Case or not to
• Use Cases
• Use case modeling steps
• An Example use case
• Identifying the actors involved in this use case
• Write the use case for the above scenario
• Use case for the above scenario (contd)
• Classifying Use Cases
• A business use case
• Example of business use case (contn d)
• A system use case
• See notes
• Levels of use cases
• Examples of Summary level use cases
• Example of User goal level use cases
• Examples of Sub function use cases
• For use case modeling
• Use cases are only one part
• The Problem with Requirements Specifications
• Relationship Between Use Cases and Requirements
• Who are interested in use cases?
• General Principles
• Scenarios
• Primary Scenarios
• Example of ATM use case
• Use Case interactions
• Finding Actors
• Finding Actors - continued
• Documenting Actors
• Where are the actors documented?
• The Actor-Profile table for the course registration system:
• Actor-profile table contd.
• Example Actor-goal list
• Goal List

5. Chapter 5 Use Case Modeling Use cases and supporting documents

• Basic building blocks
• Basic Building Blocks of an Use Case
• Supporting documents
• Conceptual model
• Domain Model
• Non-functional Specification
• More use cases
• Documenting use cases
• Use Case Diagrams
• Scope
• The scenario we have been working on
• Identify the requirements that must be addressed by the system:
• Identify the use cases :
• Example - use case model
• Example - use case model for Registration system
• Lists used to manage scope In/out list for the above example
• Lists used to manage scope Actor/goal list for the above example
• Example - Use Case Specification
• Example - Use Case Specification (Contn d)

6. Chapter 6 Writing Use Cases

• Actor Personalities
• Goal Levels
• Pre-conditions and Triggers
• Example of Pre-conditions
• Guidelines for writing flows
• Do's and don'ts" when writing use cases
• Extensions
• Use case linkages
• Sub Use Cases
• Example - Sub use cases with include & extend relations
• Quality Measures for Use Cases
• More Quality Measures
• Who should write use cases?
• Fully Described Use Cases
• How much detail?
• Completeness & Complexity

7. Chapter 7 Use Case Formats

• Formats to choose from
• Brief Description Format
• Bulleted Outline Format
• Conversational Format
• Narrative Format
• When to choose a format.
• Tools
• CASE tools
• Reviewing Use Cases
• Style
• Style Guides

8. Chapter 8 Miscellaneous Topics

• Describing UI Wizards
• Make sure that the system is included
• Make sure that the user is included
• Wrong goal levels
• Make the use case easy to read
• Collect multiple pieces of data
• Do not forget the Exception Flows (failure scenarios)
• Stay away from internal system details
• Preconditions should be established by the system
• Proper use of UML
• CRUD Use Cases
• Contain the explosion
• Example - CRUD Use Case Specification
• Example - CRUD Use Case Specification (cont d)

9. Chapter 9 Supplementary Requirements

• What are supplementary Requirements
• Example of supplementary specifications
• Example of supplementary specifications (cont d)
• Brief outline.
• Functionality
• Non-functional requirements
• Usability
• Reliability
• List Reliability requirements:
• Performance
• Supportability
• Design Constraints
• Practical Example of supplementary specifications
• Purpose
• References
• Non-Functional - Course Registration System
• Usability - Course Registration System
• Reliability - Course Registration System
• Performance - Course Registration System
• Performance (cont d)
• Supportability (cont d)
• Design Constraint - Course Registration System
• Design Constraint (cont d)