23. A data processing system, comprising: a processor; and memory storing computer executable instructions which, when executed by the processor, perform rapid application development by: creating a data dependency path based on a data model representing units of meaning and their relationships, by: analyzing the data model stored to identify a data view of the data model, said data model comprising a propositional structure representing a grammar having a plurality of parts of speech, said propositional structure having 28 predefined data relations comprising identifiers, modifiers, and descriptors related using predefined logical operators; automatically creating the data dependency path based on the identified data view; and storing data identifying the data dependency path; and creating an input/output user interface based on the data dependency path.
23. A data processing system, comprising: a processor; and memory storing computer executable instructions which, when executed by the processor, perform rapid application development by: creating a data dependency path based on a data model representing units of meaning and their relationships, by: analyzing the data model stored to identify a data view of the data model, said data model comprising a propositional structure representing a grammar having a plurality of parts of speech, said propositional structure having 28 predefined data relations comprising identifiers, modifiers, and descriptors related using predefined logical operators; automatically creating the data dependency path based on the identified data view; and storing data identifying the data dependency path; and creating an input/output user interface based on the data dependency path. 24. The data processing system of claim 23 , wherein creating an input/output user interface comprises: receiving user input selecting the data dependency path; receiving user input selecting a plurality of data items within the data dependency path; and generating the user interface comprising the selected plurality of data items.