Tape !
Ada is a strange language, we don't know why it exists, legend says that NASA is using it. VHDL comes from Ada syntax... I love VHDL.
My start formation was about database. In fact I learn Merise method before UML. Merise is a strong french method that look like UML but with database target. Generaly with Merise we learn also COBOL, or PHP.
Disk.