US Patent 10095486 Software application development tool

A software development tool for use with external systems and services uses a common code base and defines all data and messages using XML Schema System components are defined which include a device abstraction layer which handles interactions between the application and devices. A host abstraction layer handles interactions between a host system and the application. A graphical tool models the work flow of the application and includes screens and services defined by Schema. The application is assembled using the graphical tool, declarative XML rules and customizations of system components without the user having to generate any coding.