Relational Database Management Systemsλ︎ Serversλ︎ An Clientsλ︎ An RDMS client is anything that connects to an RDMS server, e.g. Database tool, command line, programming languaguage code. RDMS CLient Languagesλ︎ Structured Query Language (SQL) overview SQL SQL Guidesλ︎ W3 Schools - SQL Introduction AWS - What Is SQL Codecademy - Learn SQL