For this chapter there are no presentation. Students can found everything on the second book from the recomended literature (Isrd Group: Introduction to Database Management Systems).

A lecture from another university

For remembering the lecture, only few snapshot (only more complex pictures are presented):

For the most cases, create the "relational diagram" is enough for our application:

upper - library webpage, lower - small webshop; for such reduced example, structure are nearly the same.

Another theme - Relational algebra (introduction). In the book from the page 64, or visit Wikipedia.