1. One or more computer-readable media having computer-executable instructions for performing steps comprising: modeling an operating system with an operating system schema in a first namespace; modeling a database with a database schema in a second namespace; representing user-related operating system information by an user-related operating system class in the operating system schema; representing user-related database information by a user-related database class in the database schema; creating a view of the operating system schema within the second namespace; and creating an association in the second namespace between the operating system user-related class and the database user-related class, said association allowing queries that navigate between the operating system file class and the database file class.