Data Collection · The sources · Component
The source map
Where each fact lives, across every system that holds it — because most organisations hold the same fact in three places with three values.
The deliverable
What it is
The reconciliation problem is a source problem. Two reports disagree because they read from different systems that were updated at different times by different processes.
Mapping it is straightforward and rarely done, because each system was implemented by a different team for a different purpose.
One level in
What it is made of
Each element is a constituent part of the component. Follow one to see the attributes it carries.
The facts
The things the organisation needs to know.
3 attributes: Fact · Appears in reporting · Owner
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Pull the same fact from each system and compare. The result is usually a surprise to everyone involved.
The other components in the sources
The source of truth
Which source is authoritative per fact, and who decided — the small decision that converts a recurring argument into a lookup.
LearnThe maintenance
How each source is kept current, and how reliably — because manual sources drift and their drift is invisible.
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