The SQL Server Books Online documentation is divided into a set of default subsets. The subsets are targeted at specific audiences, and each subset covers multiple topics. Subsets make it easier to search for information related to your activities by minimizing the number of search hits. For example, an ADO programmer can use the ADO programmer subset to find information relevant to writing ADO applications, without getting topics with similar information in DB-Library and Embedded SQL. You can define your own subsets against which to perform a search.
To define your own subsets
To use a default subset
To delete a subset
Note If you delete a subset, there is no way to restore it automatically; you must redefine the subset.