The Data layer of VoiceXML 3.0 is responsible for maintainingall presentation-specific information in a format that is easilyaccessible and easily editable. Note that the data layer ofVoiceXML 3.0 is very different from the backend data for anapplication. Presentation-specific datainformation disappears whenthe VoiceXML 3.0 application terminates, while data in the backenddatabase continues to exist after VoiceXML 3.0 terminates. Examplesof presentation-specific data might include the status of thedialog in collecting certain information, which prompts have justbeen played, and how many of various error conditions have occurredso far, and the values entered by the user until they aretransmitted to the back-end database or file system.