SQL is the ANSI-standard language for accessing and manipulating relational databases. Anyone (programmers, administrators, or designers) who work with a relational databases need to understand the SQL language. While most books on the market do not properly cover the basics, this book differs: it explains fundamentals in detail, supported by realistic examples. You will gain full competence to define, access, and manipulate data in an Oracle database. This book is an effective tool for you to write effective SQL for the Oracle database. The text is fully compliant with the latest version of the ANSI SQL standard, and fully update for the Oracle 10g database. This book is a translation of popular Netherlands college text (currently in its third edition). Author Lex de Haan is highly experienced with the Oracle database, and has twenty-five years of teaching experience. de Haan is also a member of the ANSI/ISO SQL standardization national body.