1.5 XForms at a Glance

Table 1.1 shows the various XForms components at a glance; this also serves as a road map for the rest of this book. For each component, we enumerate its role in the XForms architecture, the underlying technology used by the component, and its concomitant benefits.

Table 1.1. XForms at a Glance

Component	Description
Model	Encapsulates all data aspects of a form Uses XML Schema to define constraints Uses XPath to define model properties Attaches model properties to instance nodes Captures what , how , and where to submit
Properties	Capture application constraints Enable reactive user interfaces
UI Binding	Connects user interface to the model using XPath
UI Controls	Collect user input Bind to underlying model Encapsulate all relevant metadata Access by design Encourage device independence
UI	Aggregates user interface controls Encourages intent-based authoring Creates dynamic user interaction
Events	Bring user interface to life Give access to eventing via XML Events Attach dynamic behavior Obviate common use of scripts via declarative actions