Complete data is not necessarily accurate data
A filled field can still be wrong. Keep those two questions separate.
Read the guide →THE FIELD NOTES
Start with the question
in front of you.
Short, practical guides with worked examples, clear assumptions, and a next step.
Review duplicate candidates without merging the wrong customers
Similarity is a reason to investigate, not an instruction to combine records.
Read the guide →Build useful customer segments without inventing a complex model
Begin with a decision and a small number of trustworthy fields.
Read the guide →A campaign export checklist that prevents avoidable mistakes
The final file deserves a different review from the database it came from.
Read the guide →Measure a cleanup project without hiding the hard cases
A smaller duplicate count is useful only if the same test was applied.
Read the guide →