DAX is not only an expression language, but also a query language and, when it comes to performance, the xVelocity in-memory engine is second to none. Scanning fact tables and performing leaf-level computation happens in a matter of milliseconds. Nevertheless, as with any other language, you can write good DAX or bad DAX, depending on your understanding of the engine internals. This session introduces DAX as a query language, showing the different ways of querying with DAX using real-world data. Some queries will be fast, others will need optimizations. Many practical examples based on common patterns and an analysis of the query plans will show how to get the best out of DAX.
In Lync 2013, Microsoft has introduced a number of new features that require Exchange 2013-- knowing what they are, and how they work, is critical to knowing what you'll get from an upgrade to Exchange 2013. In this session, Exchange MVP and author Paul Robichaux will dive into the Lync-related integration features in Exchange 2013, including OAuth configuration, support for high-resolution photos, and the Lync Storage Service (LYSS). You'll learn how to configure Exchange 2013 and Lync 2013 to work together to give you full access to those features.