The Business Application (BA) diagram

The BA diagram is designed to model the application flow and provide a high-level overview of the application to be generated.

The BA diagram can include various entities to model the application. Relations connect the entities and specify the relationships between them. Each entity has properties to specify all the information needed to generate the code. Until implemented, the entities on the diagram are simply icons. Once implemented, files are created that represent the information and relationships about the entity. These files are used to generate the application code.

Mobile example

Table 1. Entities
Entity	Description
Programs	A Program entity contains the information needed to generate the main logic to drive the application.
CRUD Form entity	A CRUD Form entity generates the user interface for the program. CRUD forms are used to Create, Read, Update, and Delete data from a database.
Zoom form entity	A Zoom Form generates a form used to select a value from a list and return the value to the program. It is generally related to a CRUD form field to assist the user with completing the form data entry.
Custom Form entity	A Custom Form is a form for which the code remains free.
Report Data entity	A Report Data entity generates the logic to retrieve data from the database and run a report based on a defined data definition and report layout. Important: This feature is not supported on mobile platforms.
SOAP Web Service Server entity, JSON Web Service Server entity	A Webservice Server entity contains the main logic to publish services. It listens for incoming requests and executes the relevant service operation. Important: This feature is not supported on mobile platforms.
SOAP Web Service entity, JSON Web Service entity	A Webservice entity generates a standalone Webservice. Important: This feature is not supported on mobile platforms.
CRUD form with SOAP Web Service entity, Zoom form with SOAP Web Service entity, CRUD form with JSON Web Service entity, Zoom form with JSON Web Service entity	A CRUD form or Zoom form and Webservice generates the form and a standalone Webservice. Important: This feature is not supported on mobile platforms.
Relations	A Relation entity is used to define a relationship between entities on the BA diagram. Multiple relations can be set to the same form providing easier maintenance, but also flexibility on what CRUD operations are available to the form when it is opened by different actions.
Phone / PhoneRelation	A Phone and PhoneRelation entity is used to define that the form will generate code to launch the default phone app on the device and initiate dialing of the specified phone number.
Mail / MailRelation	A Mail and MailRelation entity is used to define that the form will generate code to invoke the user's default mail application for a new mail to send.
Gallery / GalleryRelation	A Gallery and GalleryRelation entity is used to define that the form will generate code to let the user select a picture from the mobile device's photo gallery and return a picture identifier.
Photo / PhotoRelation	A Photo and PhotoRelation entity is used to define that the form will generate code to let the user take a picture with the mobile device and return the corresponding picture identifier.
SMS / SMSRelation	An SMS and SMSRelation entity is used to define that the form will generate code to send an SMS text to one or more phone numbers.
Contact / ContactRelation	A Contact and ContactRelation entity is used to define that the form will generate code to let the user choose a contact from the mobile device contact list and return the vCard.
Map / MapRelation	A Map and MapRelation entity is used to define that the form will generate code to invoke a maps app with the current Global Positioning System (GPS) location of the mobile device.
Barcode / BarcodeRelation	A Barcode and BarcodeRelation entity is used to define that the form will generate code to use a barcode scanner from the mobile device.