:PROPERTIES: :ID: 182cf1ea-feba-4962-9cf0-d1d28fd62f1b :mtime: 20231024030800 20231010035249 :ctime: 20231010035152 :END: #+title: relational Database #+filetags: :public:project: * About Relation Database Data is organised into tables. Each entity is one row in one table. The foundations of relational databses are based on $n$-ary mathematical relations.