* Added greek programming books and removed an SQL book with dead link
* alphabetize
* alphabetize greek
Co-authored-by: RantosKonstantinos <k.rantos@users.noreply.github.com>
Co-authored-by: Eric Hellman <eric@hellman.net>
* Add Greek PDF for SQL Servers
Add the greek book (pdf) about database systems, sql server.
English: Database Systems - Theory and practice
Greek title: Συστήματα Βάσεων Δεδομένων - Θεωρία και πρακτική εφαρμογή
* Add the (PDF) suffix
* Fix the line between last section and next heading
Konstantinos Rantos
George Litos
Dimosthenis Michailidis
Gerasimos (Makis) Maropoulos
Victor Felder
eshellman
kiriakosv
Fwiffo
Christoph Uschkrat
Dimitris Zlatanidis
matysanchez
mankal111