Heli Helskyaho holds a Master's degree (Computer Science) in Helsinki University and she is specialized on databases. Heli is also an Oracle ACE Director and a frequent speaker in many conferences. She has been working on IT since 1990 and with Oracle products since 1993. She has been in several positions but every role has always included database design. Heli has been an Oracle Designer user since 1996 and a Data Modeler user since 2010. She is also the CEO for Miracle Finland Oy. Heli believes that good database design and good documentation reduces performance problems and makes
solving them easier. Heli is the author of Oracle SQL Developer Data Modeler for Database Design Mastery (Oracle Press 2015).