09.bank-example-mapping.md

Shared understanding on the Bank with Example Mapping

Please take some time to read about Example Mapping.

From the previous step, we have discovered:

• missing invariants / business rules in our domain
• a misalignment on the Bank comprehension with our domain experts

We asked our business experts to be more explicit on the features provided by a Bank.

They worked on it and detailed some User Stories and defined some concepts to add to our Ubiquitous Language.

• Story 1: Define Pivot Currency

As a Foreign Exchange Expert
I want to be able to define a Pivot Currency
So that I can express exchange rates based on it

• Story 2: Add an exchange rate

As a Foreign Exchange Expert
I want to add/update exchange rates by specifying: a multiplier rate and a currency
So they can be used to evaluate client portfolios

• Story 3: Convert a Money

As a Bank Consumer
I want to convert a given amount in currency into another currency
So it can be used to evaluate client portfolios

• Ubiquitous Language
  • Pivot Currency: The pivot currency is the currency via which the other currency values are calculated.

Let's do it

• Run an Example Mapping workshop using the User Stories defined above as an input.
• Start by an individual time in which everyone can write his/her questions
  • Try to answer those questions based on your current understanding
• Extract business rules from your discussions
• For each business rule, identify at least 1 key example

Here are some resources to start with:

• Empty miro board backup
• Empty miro board pdf

What did you learn from this workshop?

Step-by-step solution

For all the languages our solution is available here