This book covers Structured Query Language (SQL), the standard that defines how to create and manipulate databases and the data that they store. It works well on two levels: As an in-depth yet concise tutorial on how to use the language, with lots of clearly worked examples and as a handy desktop reference on SQL implementation, covering all the major SQL statements that you're likely to need when programming databases, with example code for five major database systems: SQL Server, Oracle, DB2, MySQL, and Access.