SQL
SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Ted Codd in the early 1970s. This version, initially called "SEQUEL" ("Structured English Query Language"), was designed to manipulate and retrieve data stored in IBM's original quasi-relational database management system, System R, which a group at IBM San Jose Research Laboratory had developed during the 1970s.
Shared-nothing architecture
While SN is best known in the context of web development, the concept predates the web: Michael Stonebraker at the University of California, Berkeley used the term in a 1986 database paper. In it he mentions existing commercial implementations of the architecture (although none are named explicitly). Teradata, which delivered its first system in 1983, was probably one of those commercial implementations. Tandem Computers officially released NonStop SQL, a shared nothing database, in 1984.