To satisfy the demand for 24/7 information access, applications available in airport and conference kiosks, and in the mobile, gaming, and medical industries, provide consumers data access wherever they are. But it's essential that fast availability not be traded for quality performance. A prominent solution for managing the data in these applications and devices is db4othe open source object database native to the Java and .NET platforms. Highly reliable and scalable, db4o cuts down on development time by smoothly integrating into the system, cutting out the otherwise costly object-relational mapping typical of larger applications. The Definitive Guide to db4o is the first book to comprehensively cover this project in detail. You will learn about all relevant topics, including installing and configuring db4o, querying and managing objects, performing transactions, and replicating data. To aid newcomers to the topic, early chapters cover object database fundamentals, as well as technical considerations and migration strategies. The book is complete with numerous C# and Java examples, so you'll be able to follow along regardless of your chosen language.