This book introduces readers to the tools and methodology of Structured Systems Analysis as well as the nuances of the Medications domain. It applies structured systems analysis methodology and tools to electronic prescription, computerized physician order entry, drug dispensation, medication administration, and clinical decision support. Providing a comprehensive view of the EHR/EMR, the text covers user interface considerations, reporting requirements, and standards and vocabularies for meaningful use. Assuming no previous clinical and/or informatics knowledge, the author uses accessible language and includes over 170 figures and 100 review questions with answers.