member-gated statistics

Sector statistics that trade associations publish only to paying members or survey participants; in this slice both VDMA's German order-intake/turnover series and CECE's bulletins sit behind membership, leaving public pages with infographics and summaries.

In this catalog it appears concretely: - VDMA - German construction equipment industry — "order-intake and turnover statistics reserved for survey participants". - CECE - Committee for European Construction Equipment — "Members Only". - German order-intake and revenue statistics further restricted to companies participating in the survey. - Nearly 100 specialist branches within the members-only database vs national sector aggregates publicly.

Conventions decide whether two sources can be joined at all. Buy one side of an analysis that ignores this convention and every reconciliation step — calendar alignment, unit conversion, entity matching — lands on your team instead of the vendor's.

The failure mode is concrete: the label appears in a listing, the delivered files tell a different story, and the gap surfaces mid-project when fixing it is most expensive.

You rarely have to take a vendor's word for it. 82.4% of the 1,744 datasets Datadory catalogs are free to access, and VDMA - German construction equipment industry lets you inspect the real artifact before any budget is committed.

Treat every claim of this attribute as testable:

1. Open VDMA - German construction equipment industry and confirm its record — "order-intake and turnover statistics reserved for survey participants" — against the files you actually receive.
2. Open CECE - Committee for European Construction Equipment and confirm its record — "Members Only" — against the files you actually receive.
3. Open German order-intake and revenue statistics further restricted to companies participating in the survey and compare its listing against the delivered artifact before paying for a commercial equivalent.

See the term applied to real records: construction-machinery-heavy-transportation-equipment data, industrial-machinery-supplies-components data.

Adjacent concepts worth reading next: - business barometer survey - freemium pricing - trade association statistics - web scraping access