This book is an attempt to establish in the readers the importance of creating interoperable data stores and writing rules for handling this data. It also covers extracts from a few project dissertations and a research funded project that the author had supervised.- Describes the power of ontologies for better data management- Provides an overview of knowledge engineering including ontology engineering, tools and techniques- Provides sample development procedures for creating two domain ontologies.- Depicts the utility of ontological representation in situation awareness- Demonstrates recommendation engine for unconventional emergencies using a hybrid reasoning approach.- The text explains how to make better utilization of resources when emergency strikesGraduates and undergraduates doing courses in artificial intelligence, semantic web and knowledge engineering will find this book beneficial.