FTB-C000087 / Data quality concept

Valid Zero

A valid zero is an observed or derived numeric value of exactly zero that is meaningful under the field's contract.

Also known aslegitimate zeroobserved zero

Foundation 9 linked topicsPublished

Definitions

In plain terms

Zero trading volume can be a real value for an expected interval, while a missing volume means the system does not know the value.

Technical

Validity requires domain rules, unit, measurement or aggregation path, and evidence that zero lies in the allowed domain and was not substituted for absence.

Scope

Never use zero as a universal placeholder for null or missing data.

Examples

  • A governed dataset records valid zero explicitly and preserves the source context needed to interpret it.

Common misconceptions

  • Valid Zero does not have one universal meaning or policy without its declared source, scope, and data contract.

Concept relationships

Related

Contrasts with

Where this concept is used

Tutorials planned

These catalogued topics use this concept, but their complete build has not shipped yet.

  • D01-F02-A01 Important
  • D01-F04-A01 Important
  • D02-F03-A05 Important
  • D07-F02-A02 Important
  • D07-F03-A02 Important
  • D07-F03-A03 Important
  • D07-F03-A04 Important
  • D07-F03-A05 Important
  • D07-F03-A06 Important

Evidence and governance

  1. Fintech Builder Glossary Definition Contract The Fintech Builder · internal governed contract

    Supports: preferred label, short definition, technical definition

    Limits: Defines governed platform behavior rather than claiming these policies are universally prescribed by external McClellan methodology.

Reviewed by
Last reviewed
2026-07-26
Next review
2027-07-26
Record status
published
Written by

Fintech engineer building market-data and financial systems, and the author of every article, glossary record, and reference implementation on The Fintech Builder.