Notice before subprocessors change in Data warehouses and databases
A list is a snapshot. Art. 28(2) GDPR gives you a right to object, and that needs advance notice.
12 of 42 companies we measured here publish it, that is 29%. Last checked 2026-10-17.
29% here against 10% across every category we measure. Data warehouses and databases sits above the overall share for this criterion.
This page counts companies, not product entries: a company with two products in this category is one company here and two rows below.
Back to Notice before subprocessors change across all categories, or to Data warehouses and databases.
- Found12
- Not found at checked addresses30
- Not measured3
45 companies in total. Unmeasured companies are excluded from the published share.
Published
The vendor commits publicly to giving notice before the list changes.
No commitment to give notice before subprocessors change found.
We reached at least one address for each of these vendors and none of them carried it. That is what we found at the addresses we checked, on the date we checked them, and not a statement about what the vendor has.
| Vendor | What we found |
|---|---|
| ClickHouse | 8 addresses checkedChecked |
| CockroachDB | 8 addresses checkedChecked |
| Convex | 8 addresses checkedChecked |
| Crunchy Data | 8 addresses checkedChecked |
| DoubleCloud | 8 addresses checkedChecked |
| Dragonfly | 8 addresses checkedChecked |
| Dremio | 8 addresses checkedChecked |
| EDB | 8 addresses checkedChecked |
| Exasol | 8 addresses checkedChecked |
| Firebolt | 8 addresses checkedChecked |
| Gel | 8 addresses checkedChecked |
| Instaclustr | 8 addresses checkedChecked |
| Materialize | 8 addresses checkedChecked |
| MotherDuck | 8 addresses checkedChecked |
| Nile | 8 addresses checkedChecked |
| Percona | 8 addresses checkedChecked |
| PingCAP TiDB Cloud | 8 addresses checkedChecked |
| Prisma | 8 addresses checkedChecked |
| Qdrant | 8 addresses checkedChecked |
| SingleStore | 8 addresses checkedChecked |
| Snowflake | 8 addresses checkedChecked |
| StarRocks | 8 addresses checkedChecked |
| Teradata | 8 addresses checkedChecked |
| Tiger Data | 8 addresses checkedChecked |
| Turso | 8 addresses checkedChecked |
| Ubicloud | 8 addresses checkedChecked |
| Vertica | 8 addresses checkedChecked |
| Xata | 8 addresses checkedChecked |
| Yellowbrick | 8 addresses checkedChecked |
| YugabyteDB | 8 addresses checkedChecked |
Not measured
We could not look at these, or their robots.txt asks us not to. That says something about our measurement, not about them, and they are left out of the percentage above.
| Vendor | What we found |
|---|---|
| Couchbase | The vendor’s server blocked or rate-limited our crawler, so this was not measured.Checked |
| Cybertec | The vendor’s server blocked or rate-limited our crawler, so this was not measured.Checked |
| QuestDB | The vendor’s robots.txt excludes us from at least one of these addresses, so this was not measured.Checked |
Other criteria in Data warehouses and databases
- Data processing agreement
- Subprocessor list
- Data location stated
- Status page with history
- Public pricing
- Certifications named
- Uptime SLA with a figure
- HTTPS enforced with HSTS
- No third-party tracking before consent
- security.txt (RFC 9116)
- Named privacy contact
Notice before subprocessors change in related categories
Found something we missed? Tell us. A correction moves that vendor into our next nightly run. That run reads the same fixed addresses we check for every vendor, not the address you send.