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.
With the introduction of Windows Phone 8.1 and Windows 8.1, it is now possible to write truly native cross platform apps with Windows Universal apps. Get an introduction to building apps that run on the Windows Runtime, supported on both smartphone, tablet, desktop and everything in between. The talk will cover the following and more - What are the new development tools and features for Universal apps - Changes to application life cycle management - Cross platform synchronization - configure once - Geofencing and geolocation based notifications - Publish one app to both the Windows and Windows Phone stores This is the first step towards native apps running across the Microsoft ecosystem, including phone, desktop and Xbox.