Defining attribute group properties

Chapter 3 Building an XML model

To display an attribute group property sheet, double-click its name or its icon in the Browser tree view.

There are global and referencing attribute groups:

Global attribute groups are defined with the Model menu. In a schema, they are directly linked to the <schema> tag (root element). They can be reused for any element, complex type or attribute group in the model through references (See quality attribute group in the generated schema)
Referencing attribute groups are used within an element, a complex type or an attribute group definition. For this, you must use the attribute group tools in the Attributes page of an element, a complex type or an attribute group property sheet

The General page of an attribute group property sheet displays the following properties:

Property	Description
Name	Name of the attribute group. It must be a no-colon-name (See Glossary). Required when the attribute group is global
Code	Code of the attribute group. It must be a no-colon-name. Required when the attribute group is global
Comment	Descriptive label of the attribute group
Stereotype	Sub-classification used to extend the semantics of an object without changing its structure. It can be predefined or user-defined
Reference	Name of an attribute group from the current model or any model opened in the workspace. It must be a qualified name (See Glossary). If you select an attribute group from another model, a shortcut is created with the referencing attribute group. A reference allows you to reuse an attribute group with all its properties without having to define it again. When a reference is defined, the name and code properties are grayed. The name and code are those of the target attribute group
ID	ID of the attribute group. Its value must be of type ID and unique within the model containing this attribute group

The Attributes page of an attribute group property sheet allows you to add attributes to an attribute group declaration:

Tool	Tooltip	Description
	Add Attribute	Creates a local attribute
	Add Attribute Group with Reference to Attribute Group	Adds an attribute group with a reference to an attribute group defined in the current model. Select a name in the Reference dropdown listbox. You can also type a new name in the Reference column and then define a new attribute group in the Attribute Groups list (See Model menu)
	Add Attribute with Reference to Attribute from a Selection	Adds one or several attributes with a reference to global attributes defined in the current model. Select one or several global attributes in the Selection dialog box
	Add Attribute Group with Reference to Attribute Group from a Selection	Adds one or several attribute groups with a reference to attribute groups defined in the current model. Select one or several attribute groups in the Selection dialog box
	Any Attribute	Adds any attribute of a specified namespace