Book excerpt: A new, exciting approach to Databases. There has never been a Databases Guide like this. It contains 215 answers, much more than you can imagine; comprehensive answers and extensive details and references, with insights that have never before been offered in print. Get the information you need--fast! This all-embracing guide offers a thorough view of key knowledge and detailed insight. This Guide introduces what you want to know about Databases. A quick look inside of some of the subjects covered: Object-oriented database - Adoption of object databases, XML databases - Example of XML Type Query in IBM DB2 SQL, Attribute (computing) - Multi-valued databases, In memory database - Hybrids with on-disk databases, INGRES - Distributed databases, List of neuroscience databases, Tag editor - Comparing already-existing tag information to online music databases, B5000 - DMALGOL and databases, Atmospheric Chemistry Observational Databases, Directory services - Comparison with relational databases, Cursor (databases), World Governance Index - Methodology and databases, Geodatabase - Features of spatial databases, Complex event processing - Integration with time series databases, Object database - Adoption of object databases, Outline of mathematics - Reference databases, Outline of computer science - Databases, Digital watermarking - Watermarking for relational databases, Structural genomics - Protein Structure Databases and Classifications, IBM Information Management System - "Full function" databases, Organic compound - Databases, Atmospheric Chemistry Observational Databases - Ground-based and balloon observations, Poker tools - Tournament databases, Glass databases, Swiss-Prot - Source databases, XML databases - XML Enabled databases, XQuery API for Java - Relational databases, List of biological databases - Protein structure predictionProtein model databases, and much more...