With the new version 4.0, the little-database-that-could has grown up into a powerful server database ready to take on the web.
Uniqueness is a key factor when synchronizing data between SQL Server/Azure and multiple endpoints like Slates and Smartphones. With data simultaneously created and updated on servers and clients, ensuring rows are unique to avoid key collisions is critical. As you know, each row is uniquely identified by its Primary Key.
All DBAs know that Joining tables on non-indexed columns is the most expensive operation SQL Server can perform.
The act of tracking changes made by each SQL Server Compact or Silverlight sync subscriber can cause a lot of locking and blocking on the server.
If your Mobile Enterprise Application Platform (MEAP) is using SQL Server Merge Replication to provide the mobile middleware and reliable wireless wire protocol for SQL Server Compact (SSCE) running on Windows Mobile 5/6.x devices + Windows XP/Vista/7 laptops, desktops and tablets; below is a guide to help you build the fastest, most scalable systems: