Introduction. Semantics in Business - a Description. Semantics in Business Systems. Databases, Data Modeling and Semantics. Metadata and Semantics. Interpreting Meaning. Business Rules and Making Meaning. Uncovering Meaning - Methodologies. Understanding Meaning - Visualization Techniques. XML and Semantics. Semantic Based EAI and SI. The Semantic Web. Web Services and Semantics. Getting Started. Appendices.