A “Book of Business” (or Book) is a set of business domain data of one or more book types. This set of data is identified by a “driving condition” or quality. A driving condition typically arises from a business practice, and may be further qualified by local conditions. Accordingly, data may be organized based on local activities or conditions that may not be explicitly stored in a database. In one embodiment, a method for querying the database includes identifying data in a database. The data is organized into one or more segments. A book of business associated with a segment in the one or more segments is then generated. The book of business includes a set of references to the data organized into the segment. A query plan may be determined based on the book of business. A set of results may then be generated based on the query plan.