Creating reports with query objects

This paper contains a collection of patterns for creating database-reporting applications. While there are many different aspects of reporting, this paper focuses on the ability to dynamically create formulas and queries so that new reports can be generated at runtime. It does not discuss user interface issues or good database design. These patterns pull data from the database and manipulate data after it has been extracted from the database. This is accomplished by converting both queries and formulas into objects. These objects are then assembled into reports through the high-level Report Objects pattern