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Business Analysis: Data Flow Diagrams to Visualize Workflows (Udemy.com)

Process Modeling Techniques for Requirements Elicitation and Workflow Analysis - Now with ChatGPT and Jasper Demos

Created by: Tom and Angela Hathaway

Last updated April 2026

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What you will learn

  • Master Data Flow Diagrams (DFDs) to model business processes with a level of clarity and precision used by experienced analysts
  • Identify where Generative and Agentic AI can add real value within business processes
  • Turn workflow models into clear requirements, user stories, scenarios, and features that drive product delivery
  • Use generative AI to accelerate DFD creation and documentation while applying DFD expertise to validate accuracy
  • Write detailed process specifications so developers can build what the business needs without guesswork or rework
  • Identify hidden business problems, timing gaps, and exception scenarios through structured workflow analysis
  • Balance DFDs to uncover missing data or processes and reduce costly late-stage changes
  • Ensure workflow quality by validating both manual and AI-generated models using a practical four-check framework before development

How it compares

Against the other 371 rated Udemy courses in Data Analysis on CourseDuck:

  • Rating4.5 out of 5higher than 49% of them
  • Reviews5,627#45 of 372 by number of reviews
  • Length3.2 hoursshorter than 62% of them
  • Last updatedApril 2026more recently than 69% of them

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Course Description

Do you want to visualize your workflows and business processes to simplify the requirements discovery process? Or maybe you want a more efficient workflow, but you don’t know where to start? This course is for you!

Learn how to:

  • Create Data Flow Diagrams (DFDs) and Context Diagrams from your current process workflows

  • Visualize business needs, analyze business problems, discover timing anomalies, and optimize exception/error handling

  • Create a holistic picture of requirements, user stories, features, etc. that increases the buy-in of all stakeholders

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Use Data Flow Diagrams to Visualize Workflows

Getting from someone's explanations of how they do their job to usable and accurate workflow descriptions can be a daunting proposition. Understanding current workflows, however, is critical to defining a future digital solution. Just as critical is understanding how data is created and consumed throughout the workflow.

To truly understand problems inherent in a business process or workflow, you need to help the domain experts, business analysts, and developers visualize what they do. Data Flow Diagrams are phenomenal tools for visualization.

Working with business experts, you can help them discover problems and inefficiencies they don’t even know they have. These are not people problems; they are process problems. Understanding when and how to create and use Data Flow Diagrams will help you discover and capture the requirements for improving the use of information technology.

Combined with workflow analysis techniques, DFDs optimize your workflows and reveal Requirements, User Stories, Features, Scenarios, or whatever mode you use to describe desired business outcomes of software.

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Who Needs DFDs Today?

Data Flow Diagrams (also written Dataflow Diagrams) are a method for depicting the sources, transportation, transformation, storage, and consumption of data in a business process. These are not just tools for data analysts and software developers.

In our extensive experience, DFDs are tools of visual communication among domain experts (aka Subject Matter Experts or SMEs) and the Information Technology (IT) group. Having used them in hundreds of requirements discovery and user story workshops over the years, we have yet to find a better tool for encouraging productive discussions about workflows and how individual departments interact.

In addition, many organizations are undergoing digital transformation that relies on Big Data. Artificial Intelligence, Machine Learning, and Deep Learning depend also on reliable, accurate, and accessible data. Since bad data leads to bad outcomes, the ideal time to ensure the requisite level of quality is when the data is created. A Data Flow Diagram is an optimal tool for analyzing and improving data quality at the time of creation.

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Why Should You Buy This Course?

This course includes the most complete, in-depth Data Flow Diagram tutorial that helps you remove workflow process problems and clarify complex requirements.

  • Fully updated with tons of new content.

  • Includes Student Handout in .pdf format for notetaking

  • "Intellimated" video lectures use visual representations to simplify complex concepts and associations.

  • Quizzes and assignments give you an opportunity to test your understanding of the presented material, reinforce learning, and increase retention.

  • Help from the authors to clarify open questions and provide additional information.

  • Lifetime access to the course including future updates.

  • 30-day Moneyback guarantee backed by Udemy if you are not completely satisfied with the learning experience.

  • You will gain confidence in your ability to leverage the power of User Stories to minimize miscommunication that plagues IT initiatives.

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About the Course

You will learn the benefits of process visualization for the business community, for the one wearing the Business Analysis or Product Owner hat, for those tasked with developing the solution, and ultimately for the entire organization.

You will also discover that DFDs are powerful tools for recognizing and solving some major problems that haunt IT projects, such as scope creep, project overruns, and missing or misunderstood requirements.

“Business Analysis: Data Flow Diagrams to Visualize Workflows – Simply Put!” uses a concrete business scenario to present a simple, easy-to-learn approach using interviews with domain experts to create and analyze Data Flow Diagrams depicting workflow and data manipulation.

You will learn step-by-step how to create a Context-Level Data Flow Diagram and explode relevant process(es) to reveal the nitty-gritty detail (i.e., individual process and data specifications) that developers need to create IT solutions that the business community needs.

The course also covers how to do workflow analysis using a DFD that delivers Requirements, User Stories, Features, Scenarios, or whatever mode you use to describe desired business outcomes of software products.

The course answers the following questions:

  • What is a Data Flow Diagram (DFD)?

  • What is a Rigorous Physical Process Model?

  • What is a Context-Level DFD?

  • Why should I use Data Flow Diagrams?

  • What symbols can I use on each type of diagram?

  • How can I drill down into a process?

  • How can I show internal processes and flows that produce the results?

  • What does balancing a Data Flow Diagram mean and what is the business value?

  • What is the most efficient approach to balancing a DFD?

  • What business value do process specifications offer?

  • How can I express detailed specifications for processes and data?

  • What is “metadata" and why do you need it?

  • What does a fully balanced DFD look like?

  • What value does a DFD fragment provide?

  • How can I visualize what’s wrong with my current workflows?

  • How does a DFD help me get requirements or user stories?

Regardless of your job title or role, if you are tasked with identifying business process improvements or functional requirements, this course is for you.

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About the Instructor

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Instructor Details

Tom and Angela Hathaway

Join our thriving community of over 140,000 students from across the globe and step into the world of cutting-edge AI-assisted business analysis and UX design with us. Hello! We're Angela and Tom Hathaway, the dynamic duo behind BA-EXPERTS, BA Learning Hub, and AI for Us - 50+. We're thrilled to have you here.

With a combined experience of over six decades, we've navigated the evolving landscape of business analysis. Our journey has been marked by a deep immersion in information technology, mastering the art of requirements engineering, and applying our skills across varied industries. From small family enterprises to Fortune 100 giants and government sectors, our expertise has fueled success stories in every corner.

In the ever-changing world of business and technology, we understand that grasping the nuances of business analysis and UX design can be daunting. That's why we've dedicated our careers to not just mastering these fields but also to making them accessible and engaging for you. Our approach is simple: we break down complex concepts into digestible, easy-to-understand segments, enriched with real-world examples and interactive sessions. This way, you're not just learning – you're experiencing.

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Reviews

4.5

5,627 ratings on Udemy

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By Anonymized User on 6/9/2026

The course is going exactly how I expected it to go. I have experience with this information so its serving mostly for reinforcement. Nonetheless, the information is presented in a visually engaging manner and I appreciate that.

By Dulce Vitiza Neves Pires Mendes on 3/11/2026

Accurate and useful information, with a nice approach that guides us through all the steps and different ways to accomplish the main goal of documenting and illustrating requirements from a Business Analyst’s point of view, identifying them and presenting them to stakeholders.

By War Torrente-Pallera on 8/19/2025

The course is easy to understand and follow. There are a lot of technical learnings that can be applied to my work in project management and process improvement. Thank you!

By Oleksandr Churiumov on 9/21/2024

It is a very accessible and comprehensive course on creating and utilizing DFDs with lots of visuals. The instructor simplifies complex concepts and provides a clear explanation of the value of DFDs for almost any project.

By Dmitrii Buriachek on 9/6/2023

The course is good, but the English in this course is strange, The main is practical task is hard to understand, and not clear. Please rewrite the practical task, and try to write it in simple English.

By Anonymized User on 4/14/2023

Very thorough explanation. As an "old schooler", the use of an "analog"/mail delivery entry point is easy to follow and understand. I'd suggest an update to a more digital example (i.e. a company web portal where customers enter orders and there can be inventory/credit validation/payment, etc... validations that orders pass through. You seem to have a lot to offer...thanks for sharing!

By Anonymized User on 9/13/2022

This course went beyond my expectations. I've completed Data Flow Diagrams before; however, this course provided me with additional examples and techniques to exemplify my examples even better. I would encourage everyone to complete the one assignment, as it is well worth your while to practice this skill at least once prior to your real assignment.

By Christopher Miller on 10/23/2021

The course was very well put together with clear concepts explained in simple easy to follow terms. I’m working on documenting a software system right now and this has been very helpful because it forces me to think in terms of the processes that are being supported by the system and not the system as an end in and of itself. I’ll definitely be looking for more training videos from this particular instructor. Very nicely done.

By Chirag Tandon on 1/14/2021

Great learning experience, course is not only about Data flow but the structured approach which can ease identifying and fixing loopholes in no time.

By Edward Ganges on 9/28/2015

Comprehensive and informative with exceptional visuals, fully animated audio/video, no blank or talk only spots, VERY high production values, consistent audio, in line practice and examples all packaged into a warm, well paced, clean presentation. Highly recommended.

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Overall Score : 90 / 100