diff --git a/books/free-programming-books-langs.md b/books/free-programming-books-langs.md
index c2351279d..5f53055de 100644
--- a/books/free-programming-books-langs.md
+++ b/books/free-programming-books-langs.md
@@ -2491,6 +2491,7 @@ Books on general-purpose programming that don't focus on a specific language are
 
 * [Developing Time-Oriented Database Applications in SQL](https://www2.cs.arizona.edu/~rts/tdbbook.pdf) - Richard T. Snodgrass (PDF)
 * [Essential SQL](https://www.programming-books.io/essential/sql) - Krzysztof Kowalczyk and  Stack Overflow Documentation project (HTML)
+* [How to Design Structured Database Systems Using SQL](https://www.freecodecamp.org/news/how-to-design-structured-database-systems-using-sql-full-book/) -  Daniel García Solla, freeCodeCamp (HTML)
 * [Introduction to SQL](https://github.com/bobbyiliev/introduction-to-sql) - Bobby Iliev (Markdown, PDF)
 * [Learning SQL](https://riptutorial.com/Download/sql.pdf) - Compiled from StackOverflow Documentation (PDF)
 * [Oracle Database Notes for Professionals](https://goalkicker.com/OracleDatabaseBook/OracleDatabaseNotesForProfessionals.pdf) Compiled from StackOverflow Documentation (PDF)