This series of German-language sourcebooks takes all the Pathfinder core (SRD) material and groups it into topical lists. These topical lists generally are presented in alphabetical order. Usually, a cross-reference table presents the German-language item name with the English-language item name.
For example, Alles zu Zaubern enumerates all of the spells by name, with descriptions.
The entire series is derived from a database which presumably allows for easy updates and corrections - thus, MyPFDB = My Pathfinder Database.