M.P. Johnson, DBMS, Stern/NYU, Sp2004
Relational databases are a great success of theoretical ideas.
based on most “theoretical” type of math there is: set theory
DBMS companies are among the largest software companies in the world.
Oracle, IBM (with DB2), Microsoft (SQL Server, Microsoft Access), Sybase.
Also opensource: MySQL, Postgres, etc.
XML (“semi-structured data”) also important
New lingua franca for exchanging data