Database specialist Bowman takes off where her 1996 Practical SQL Handbook leaves off, going beyond the basic query structure and simple examples to explore the complexities of using Structured Query Language to meet real-world business needs. She describes dealing with legacy systems, inherited problematic code, dirty data, and query tuning for better performance. She assumes readers to have a solid foundation in databases and the language. The accompanying disk contains the entire database used as an example throughout the text. Annotation c. Book News, Inc., Portland, OR (booknews.com)