Data that drives decisions/Name the decision
2
The question
Name the decision
A measure can reconcile and still be the wrong answer. Publishing it before the decision is named gives that decision a figure it was not built for.
My operating rule: name the decision, the person who will act, and what they would do if the number moved, before the grain is declared, and do not publish the measure as the answer to a decision that was not named.
Checked 16 Oct 2026
Why a reconciled number still misleads
The comparison has already passed. The short path is to read the number out as the answer to whatever question is in the room. The number was produced by a process. The question in the room may be a different decision. A figure that is true to its grain can still be unrelated to the decision someone is about to make.
Kimball's order puts the business before the grain. Before a dimensional model is designed, the team uncovers what the business needs in sessions with business representatives, to understand their objectives from their indicators, their issues, their decision-making processes, and the analysis they need, and at the same time uncovers what the source data can support. The four design decisions then begin by selecting the business process. A business process is an operational activity, such as taking an order, processing a claim, or snapshotting every account each month. Events of that process generate the metrics that become facts. Most fact tables focus on the results of a single process. Choosing the process defines the design target, and it is what allows the grain, the dimensions, and the facts to be declared. The answers come from the needs of the business and from the source data. A report title is not that process.
The relation I use between a measure and a goal is the GAO's, from the evaluator's guide to annual performance plans under the Results Act, April 1998. The guide is about an agency plan. It does not describe a dashboard. Criterion 1.1 says the measures in the plan should adequately indicate progress toward the performance goals. When a goal is not self-measuring, the measures translate it into concrete, observable conditions that determine what data to collect, so the agency can assess what happened, make decisions, and assign accountability. To do that, the measures have to clearly represent, or be related to, the performance they are trying to assess. The guide's example is the shape of the failure: average processing time for tax returns does not represent, and is not clearly related to, the goal of increasing the accuracy of tax return processing. The time can be collected carefully and still be the wrong number for that goal.
Kimball Group, four-step design·Kimball Group, business process·Kimball Group techniques PDF·GAO Results Act guide, April 1998
The practice, and my rule
The design order is Kimball's. Select the business process, then declare the grain. Business data governance representatives participate in that design, so the business has agreed to the names and the rules. I treat that participation as the design session. It does not, by itself, name the decision the published number will answer.
The analytics field card states the failure I am writing about: the wrong question, the wrong audience, or an unclear decision. I read the question as the decision, the audience as the person who will act, and an unclear decision as a move that has not been named. The card's reconciliation gate stays on the first page of this book. This page starts earlier. The number may already be true to a grain.
My operating rule on that practice: name the decision, the person who will act, and what they would do if the number moved, before the grain is declared, and do not publish the measure as the answer to a decision that was not named. A workshop can agree a process and still leave the decision unnamed. A green comparison can agree a grain and still leave the decision unnamed.
The day
This is the order I use before I declare a grain for a measure that is about to be offered as an answer. The process is Kimball's. The relation between the measure and the goal is the shape of the GAO criterion. The stop, when the decision cannot be named, is my rule. Reconcile or block still owns a disagreement between two reports.
An illustrative break
This is an illustrative scenario. It is not a record of a portfolio I measured, and it states no amount.
One extract is an open invoice as of yesterday. The grain is agreed, and there is no second report in the room. Two decisions are. One person will choose which customers to call. Another will decide whether to extend terms on an invoice. The rows can be true to the grain. They can answer the terms decision, because that decision is about an invoice. They are not, by themselves, the call list, because a call is a customer and this row is an invoice. Until the room names which decision this publish is for, the extract stays dark.
What I inspect
These are the questions I ask. They are my check, not a list Kimball or the GAO published.
How I would know
I track four signals. I have no target times, and these definitions are not results I have collected. A reconciled grain whose decision cannot be restated is not the practice.
Unnamed decisions are published measures whose actor cannot restate the decision.
Written moves are measures where the actor has written what changes if the number goes up, and what changes if it goes down.
Parked answers are the times a measure stayed unpublished as an answer because the decision, the actor, or the move was missing.
Single process means the metric comes from one named business process.
Where I do not use it
Two reports that disagree stay on Reconcile or block. This page does not choose a number between them, and it does not replace the named owner of a definition.
Kimball encourages an atomic grain because it withstands questions you did not plan, and a summary grain presupposes the questions people already share. A table at the atomic grain of a process may exist before a decision is named. I do not offer that table as the answer to a decision I have not named.
An investigation that will not be published can look through a process before anyone has a decision. This page blocks the publish as an answer.
The calendar, the blast radius, and the cutover stay on the technology delivery field card. A slow PD or ECL backtest stays on the Bayesian optimisation card.
The GAO guide assesses an agency performance plan. I am not running its evaluator's checklist against a report. I am using the relation it requires between a measure and the performance that measure is supposed to assess.
Kimball Group, grain·GAO Results Act guide, April 1998·Technology delivery field card·Bayesian optimisation field card
References
- Kimball Group, Four-Step Dimensional Design Process (read 16 Oct 2026)
- Kimball Group, Business Processes (read 16 Oct 2026)
- Kimball Group, Dimensional Modeling Techniques PDF (Sep 2013)
- Kimball Group, Grain (read 16 Oct 2026)
- GAO, An Evaluator's Guide to Assessing Agency Annual Performance Plans, GAO/GGD-10.1.20 (April 1998)
- Data analytics field card
- Technology delivery field card
- Bayesian optimisation field card