Steven Feuerstein

Steven Feuerstein is an author focusing on the Oracle database PL/SQL language, having written ten books on PL/SQL, and one book on mySQL, all published by O'Reilly Media.<ref name="PL/SQL Blog">
</ref> His signature book, "Oracle PL/SQL Programming",
which many consider the "bible" for PL/SQL developers, was first published in September 1993. It has grown from 916 pages in 1993 to over 1000 pages in its 6th edition, published 20 years later.
Career.
Feuerstein has developed software since 1980. He spent five years with Oracle Corporation (1987–1992) and served as PL/SQL evangelist for Quest Software from January 2001 to 2013. In March 2014, he re-joined Oracle Corporation as an Architect and leads a team of Oracle Developer Advocates.
Between 1999 and 2008, he focused his attention on improving the testing of PL/SQL programs, first by starting the open-source framework utPLSQL for unit testing PL/SQL, later on through the creation of Quest Code Tester for Oracle, which automates PL/SQL code testing.
Steven was one of the original Oracle ACE Directors and publishes regularly in Oracle Magazine and in the ODTUG magazine.
In April 2010, Feuerstein launched the PL/SQL Challenge, a daily quiz on Oracle PL/SQL that quickly attracted over 1,000 daily players, making it one of the most active PL/SQL-related websites on the Internet. In 2011, Feuerstein added the PL/SQL Channel, which offers video-based training on the Oracle PL/SQL language.
In March 2014, Feuerstein re-joined Oracle Corporation as an evangelist. He then formed the Developer Advocates team to help Oracle Database users take full advantage of this database to build their applications. The PL/SQL Challenge was transformed into the Oracle Dev Gym, which offers quizzes, workouts and classes on SQL, PL/SQL, and other Oracle technologies.