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By PROXIMA SOFT. Px Framework components enable fast development of the database applications, currently under database servers such as Oracle, MS SQL, MySQL, FireBird, InterBase server (other database platforms are being developed). Px Framework components are RAD components, which enable fast development of the application, its fast modifiability, readability of the source code and many other friendly and automated processes, which have favorable effect on the development of the application. Px Framework's key component is the PxWebQuery component, which can, after its definition and entry of the parameters (SQL command, ConnectionString), work directly with database, carry out database operations, such as editing, entering and erasing of the row. Linking the PxWebQuery component to the PxSuperGrid component enables display of the data in the Table(Grid) with the built-in automatic functions, such as sorting and paging of the table contents. Then the PxWebQuery component contains module of automatic validation, which checks data before saving them, and if there are any invalid data, saving process shall be stopped and the relevant component shall show the error message. Then the Px Framework consists of the composite components, such as PxEdit, PxCombobox, PxCheckbox, PxFlyCombobox, PxGreatRepeater, etc., which insure and ease work during the editing and displaying of the data. The Px Framework's philosophy regards the PxWebQuery component as the core of the application, which offers or contains great number of data, definitions of the tables interface, definitions of some entries display in the PxSuperGrid component, definitions of the data control in such components as PxFlyCombobox, PxGreatRepeater etc., as well as the module for data validation during their saving. The PxWebQuery component lends data from its large-scale capacities to other composite components, such as PxEdit, PxCombobox, PxCheckbox, PxFlyCombobox, PxGreatRepeater etc., which operate in the strictly limited diapason defined by the PxWebQuery component.