• More emphasis on the variety of large-data systems (e.g., Web search) in Chapter 1. • Simplified functional dependencies material – Introduces X, Y, ... as attribute sets early, and simplifies lossless-join decomposition via project/join from Ch. 2. • More material on SQL indexes, including materialized views as a general kind of index. • New advanced topics in SQL added, such as star schemas, OLAP, data cubes, recursive SQL, and authorization. • A new Chapter 11 on Semistructured Data Models – Covers XML, DTD’s and new material on XSchema. • A new Chapter 12 on Query Languages for Semistructured Data – Includes new material on XPath and XQuery.