When information is exchanged in XML format, there needs to be an agreement between the sender and receiver about the structure and content of the XML document. An XSD (XML Schema Definition Language) Schema can be used to enforce this contract and validate the XML data being exchanged. Jacob Sebastian’s book explains all.
As a developer, DBA or manager, you may not really want to know all about XML, replication or Reporting Services, but if your next project uses one or more of these technologies heavily then the best place to start is with the ‘jungle roof’ view of each topic that this Crib Sheet compendium provides.
Every day, out in the SQL Server forums, the same questions come up again and again: why is this query running slow? Why isn’t my index getting used? In order to arrive at the answer you have to ask the same return question in each case: have you looked at the execution plan? Grant Fritchey provides the only dedicated and detailed book on this essential topic.