By Trung Ha
This tutorial will use the catalog.xsd from the "Editing and validating XML files" Examples. To create it, select New -> Examples... to launch the wizard. Follow the instructions described in the wizard, then click Finish to create the example project.
Once created, under the PublicationCatalogue folder, locate the Catalogue.xsd file and double click the file to open it in the XML Schema Editor. As shown below, an Outline and Properties view is provided in addition
to the editor pane. At the bottom of the editor area you'll see that there is a 'Source' and a 'Design' tab at the bottom of the editor area. The 'Source' tab is used
for basic XML source editing. The 'Design' tab is used for higher level graphical editing. Select the 'Design' tab so that you're looking at the Graph view. As shown
below you should see a 'top-level' view of the XML Schema that summarizes all of the components (e.g. elements and types) that are defined in the schema.
In order to see these components in detail you can 'drill down' on a component of interest by double clicking on it. For example,
if we double click on the 'BookType' component, the editor will display the structure of the 'BookType' type as shown below.
To return to the 'top-level' view, press the back button
at the top left of the editor, or right clicking within the editor and selecting 'Back to Schema' from the context menu.
Editing the schema is achieved by invoking context menu actions on selected objects in the Graph view and using the properties view to modify the properties of the selected object. Go back to the top-level view and follow the steps below to create a new element declaration and define its content.