legal
Last updated: 1 September 2026. These terms cover the purchase and use of PDF guides sold on syrenthix.com.
Syrenthix ("we", "us") sells digital PDF guides on relational database development through syrenthix.com. By purchasing or using this website, you agree to these terms.
We sell downloadable PDF guides. Each product page lists the price, format, and a description of what the guide contains before you buy. There is no subscription — a purchase grants a one-time license to download and keep the guide.
Prices are shown in euros (€) on each product page. When you choose to buy a guide, you're taken to a checkout page hosted by our payment provider. We don't store your card details — payment is processed entirely by that provider under its own terms.
After a successful payment, you'll receive access to your PDF guide by email at the address you provide at checkout. If you don't receive it within a reasonable time, contact us and we'll resolve it.
When you buy a guide, we grant you a personal, non-transferable license to download and use it for your own learning or professional reference. You may not resell, redistribute, publicly share, or republish a guide's contents in whole or in part without our written permission.
Paid guides are covered by a 30-day money-back guarantee, described in full in our refund policy.
Our guides describe technical concepts and practices as accurately as we can. We don't guarantee any specific result, income, or career outcome from using them, and nothing on this site should be read as such a guarantee.
You agree not to use this website for any unlawful purpose, to attempt to gain unauthorized access to our systems, or to interfere with the site's normal operation.
We may update these terms from time to time. The "last updated" date at the top of this page will reflect the most recent change. Continuing to use the site after an update means you accept the revised terms.
Questions about these terms can be sent to hello@syrenthix.com or through our contact page.