Requirements and designone of the six knowledge areas of the core guide
  • Couverture de l'eBook Diagrammes de flux de données — version français
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13 - Data Flow Diagrams

13 - Data Flow Diagrams

Make the movement of information visible

With no overall view, information gets lost between departments: the website sells what no longer exists, the shops re-key by hand, and everyone blames "the system". The customer simply does not come back.

Data flow diagrams make an invisible circuit visible. With four symbols and one conservation rule, they show where data comes from, where it rests, and where it is lost. You follow the method step by step — through to the costed diagnosis and the choice of the target flow.

This guide does not only teach you to draw a diagram. It teaches you to follow the data — and to repair what nobody could see.
€16,95 EUR
€16,95 EUR
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What you get

  • A PDF to read on screen or print
  • The language you pick above, delivered by e-mail within the minute
  • The volume's blank template, ready to reuse
  • Future corrections and additions, at no extra cost
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What's inside

Nine chapters, the same in every volume of the collection. You learn the structure once, then find it again in every book.

  1. Welcome to the collectionWho this book is for · how to read it · why a fictional company
  2. Edelw'ice, a company with a taste for changeStructure, culture, and the challenge of the moment
  3. The problemThe case Edelw'ice has to solve: what it costs, and what nobody dares say
  4. Understanding the methodWhat the technique does, what it does not do, and its golden rule
  5. The turning pointWhat the method changes: the situation before, the situation after
  6. The method, step by stepEvery step, in order, with what it produces
  7. What it changedThe effects that take hold, and what to remember
  8. Key takeawaysThe method in one sentence · when to use it · the steps · strengths and limits
  9. Glossary and resourcesYour blank template · the essential glossary · what comes next in the collection
The full table of contents, exactly as printed in the book. Click to enlarge

The technique, played out on a real case

Edelw'ice makes artisanal ice cream in French-speaking Switzerland. It is a fictional company, and that is deliberate: the same company runs through every volume of the collection, with its teams, its constraints and its disagreements. You meet it again from one book to the next, so you never have to relearn the setting — only the technique. Who is Edelw'ice

This volume's case

A shop sale that never decrements the website's stock, and nobody to spot the hole. The volume maps how information actually travels, finds where it stops, and puts a figure on what that costs.

18 %

de références au stock faux

6 %

de commandes touchées

Frequently asked questions

Do I need to know the BABOK to use it?

No. The volume is written for someone who has to run Monday's session, not to prepare for a certification. The reference guide is cited at the end of each chapter, for those who want it.

How do I receive the file?

By e-mail, within a minute of payment, in the language chosen on this page. The link stays valid: you can download it again later from the same e-mail.

Is the German edition a translation?

No. It is adapted to the Requirements Engineering framework and vocabulary actually used by German-speaking practitioners.

Can I print it, or share it with my team?

Printing for your own use is intended. To equip several people, in several languages, there is a company plan.