Last updated: 2026-05-07
This page is the English translation of the German “Datenschutzerklärung” required by GDPR and the German Telecommunications-Telemedia-Data-Protection Act (TTDSG). The German version remains authoritative for legal interpretation.
1. Data Controller
Data controller within the meaning of the General Data Protection Regulation (GDPR):
Marcus Belz
Rheintalbahnstraße 17
68753 Waghäusel
Germany
Phone: +49 1577 3456535
Email: marcus.belz@gmx.de
2. Scope
This privacy policy applies to the website `sql.marcus-belz.de`, a private technical blog covering SQL Server, T-SQL, ETL, and data quality topics. The site is operated as part of a freelance activity. Registration or a user account is not required for read access.
3. Hosting
The website is hosted by:
ALL-INKL.COM Neue Medien Münnich
Inh. René Münnich
Hauptstraße 68
02742 Friedersdorf
Germany
When you access our website, personal data is collected (e.g., IP address, date and time of the request, transmitted data volume, accessed page, accessing browser/operating system). This data is stored in the server log files of the hosting provider.
Legal basis: Art. 6 (1) lit. f GDPR (legitimate interest in technically error-free delivery and stability of the website).
Storage period: Log files are kept by the hosting provider for a maximum of 7 days for error diagnostics and are then automatically deleted.
4. Data Collected and Purposes
4.1 Server Log Files
When the website is accessed, the hosting provider All-Inkl stores the following data in the server logs:
- IP address of the requesting device (anonymized after 7 days)
- Date and time of the request
- HTTP status code
- Transmitted data volume
- Browser type and version
- Operating system
- Referrer URL (previously visited page)
This data is processed exclusively to ensure technical operation. It is not combined with other data sources.
4.2 Cookies
The website uses only technically necessary cookies:
- pll_language
Stores the selected language (DE/EN) for multilingualism via the Polylang plugin
1 year - wordpress_logged_in_*, wp-settings-*
Authentication in the WordPress admin area (only for logged-in authors/admins, not for anonymous visitors)
Session or 1 year
Legal basis: § 25 (2) no. 2 TTDSG (technically necessary cookies).
No tracking, analytics, or marketing cookies are used. There is no web analytics plugin (no Google Analytics, no Matomo, no Plausible), no marketing pixels (no Meta Pixel, no LinkedIn Insight Tag, no Google Ads conversion tracking), no A/B testing, no live chat widgets.
For this reason, no cookie banner is currently required (see TTDSG § 25 (2) no. 2). Should tools with tracking cookies be deployed in the future, a consent banner will be added and this declaration updated.
4.3 WordPress Plugins Used
The website runs on WordPress with the following plugins, which may process personal data:
- Yoast SEO (Free)
generates meta tags, XML sitemap, and structured data. Does not process personal data of visitors; collects no tracking data. - Polylang (Free)
manages DE/EN multilingualism, sets the technically necessary `pll_language` cookie (see above). - Code Block Pro
renders SQL/code snippets on the frontend. Does not process personal data. - Download Monitor
manages downloadable files (e.g., Excel examples). Optionally, the plugin can record download statistics — if active, IP addresses are stored anonymized; this statistics function is currently not active. If activated, this declaration will be supplemented. - All-in-One WP Migration
pure admin tool for backup/restore, not relevant for visitors. - OMGF — Optimize My Google Fonts (Free)
hosts the fonts used on this site (Inter, JetBrains Mono) locally on the web server, so that no connection to Google’s servers is established when loading the website (see section 4.5).
4.4 Embedded Third-Party Content
The website does not use embedded content from third parties such as YouTube, Vimeo, Twitter/X, Facebook, or similar social media embeds. External links to sources (e.g., Microsoft documentation) are placed as plain hyperlinks; clicking only then leads to the external site.
4.5 Fonts
The website uses the fonts Inter (body and headings) and JetBrains Mono (code blocks). Both are served locally from the website’s own web server via the plugin OMGF — Optimize My Google Fonts. No connection to Google’s servers is established when loading the website; the visitor’s IP address is not transmitted to Google.
Legal basis: Art. 6 (1) lit. f GDPR (legitimate interest in an appealing and consistent presentation).
5. Data Recipients
Personal data is shared only with the hosting provider All-Inkl as a data processor. Transfer to other third parties does not take place — unless legally required.
6. Transfer to Third Countries
Personal data is not transferred to third countries outside the EU/EEA.
7. Storage Period
- Server log files (hoster All-Inkl)
see section 3 — typically 7 days, then automatic deletion. - Cookies
see section 4.2 — Polylang language cookie 1 year, WordPress auth cookies on logout or session end. - Other data
not collected, therefore no storage period relevant.
## 8. Rights of Data Subjects
According to GDPR, you have the following rights:
- –Right of access (Art. 15 GDPR) — You can request confirmation as to whether personal data is being processed and, if applicable, information about that data.
- –Right to rectification (Art. 16 GDPR) — You can request correction of inaccurate personal data.
- –Right to erasure (Art. 17 GDPR, “right to be forgotten”) — You can request the deletion of your personal data, provided that its processing is not necessary to fulfill legal obligations.
- –Right to restriction of processing (Art. 18 GDPR).
- –Right to data portability (Art. 20 GDPR) — You can receive your data in a structured, commonly used, machine-readable format.
- –Right to object (Art. 21 GDPR) — You can object to the processing of your personal data.
To exercise these rights, please contact us at the address provided in the imprint.
9. Right to Lodge a Complaint with the Supervisory Authority
According to Art. 77 GDPR, you have the right to lodge a complaint with a data protection supervisory authority if you believe that the processing of your personal data violates the GDPR.
Competent supervisory authority for Baden-Württemberg:
Der Landesbeauftragte für den Datenschutz und die Informationsfreiheit Baden-Württemberg
Lautenschlagerstraße 20
70173 Stuttgart
Germany
https://www.baden-wuerttemberg.datenschutz.de
10. Changes
This privacy policy may be updated occasionally to reflect new legal requirements or changes to the site setup. The date of the last change is shown at the top of this page.