A.1 Metamodel for UML 1.3/1.4

Column "Attributes" provides the name of the attributes, column "Type" indicates if the attribute is a data or cross-reference attribute, column "Mult." indicates the multiplicity of the attribute ("one" for single-valued, "many" for multi-valued attributes).

Attribute	Type	Multi.	Description
context	ref	one	Owner of the element in the UML model.
id	data	one	Unique identifier of the model element.
name	data	one	Name of the element in UML model.
stereotypes	ref	many	The stereotypes of the model element.

Table 6: Default attributes for the UML1.x metamodel

In Table 7, column "Model Element" lists all elements of the UML1.4 metamodel. The remaining columns provide the details about all further attributes the metamodel elements define in addition to the inherited attributes.

Model Element	Attribute	Type	Multi.	Description
class	visibility	data	one	Visibility of the class (public, private, protected, package).
	abstract	data	one	Boolean indicating if class is abstract.
	leaf	data	one	Boolean indicating if a class must not have subclasses.
interface	---	---	---
datatype	---	---	---
attribute	visibility	data	one	Visibility of the attribute (public, private, protected, package).
	attributetype	ref	one	Reference to the attribute type (class, data type etc).
	changeability	data	one	Changeability of the attribute (changeable or none, frozen, addOnly).
operation	visibility	data	one	Visibility of the operation (public, private, protected, package).
	abstract	data	one	Boolean indicating if operation is abstract.
	isquery	data	one	Boolean indicating if operation is a query that does not change the classifier's state.
parameter	kind	data	one	The kind of parameter (in, out, inout, return).
	parametertype	ref	one	Reference to the parameter type (class, data type etc).
method	---	---	---
model	---	---	---
package	---	---	---
subsystem	---	---	---
association	---	---	---
associationclass	---	---	---
associationend	navigable	data	one	Boolean indicating if the association end is navigable.
	aggregation	data	one	Indicates if the association end is an aggregation or composite.
	associationendtype	ref	one	A link to the element attached to the association end.
generalization	genchild	ref	one	Link to the child in the generalization.
	genparent	ref	one	Link to the parent in the generalization.
abstraction	abssupplier	ref	one	Link to the interface.
	absclient	ref	one	Link to the element implementing the interface
dependency	depsupplier	ref	one	Link to the supplier of the dependency.
	depclient	ref	one	Link to the client of the dependency.
usage	depsupplier	ref	one	Link to the supplier of the usage.
	depclient	ref	one	Link to the client of the usage.
object	objtype	ref	one	Link to the element of which this object is an instance.
stimulus	stimsender	ref	one	Sender of the stimulus.
	stimreceiver	ref	one	Receiver of the stimulus.
	stimaction	ref	one	The action that the stimulus dispatches.
link	---	---	---
linkend	linkendtype	ref	one	The element that is attached to the link end.
collaboration	---	---	---
classifierrole	classifierbase	ref	one	The classifier which the classifier role is a view of.
interaction	---	---	---
message	messagesender	ref	one	The sender of the message.
	messagereceiver	ref	one	The receiver of the message.
	messageaction	ref	one	The action that the message dispatches.
statemachine	---	---	---
state	entryaction	ref	many	The entry actions of the state.
	exitaction	ref	many	The exit actions of the state.
	doactivity	ref	many	The do actions of the state.
	internaltrans	ref	many	The internal transitions of the state.
	kind	data	one	The kind of state (simple, composite, submachine, stub, synch, final; initial, deepHistory, shallowHistory, join, fork, choice or branch, junction; action, objectflow, call, subactivity).
	isconcurrent	data	one	Indicates if a composite state is concurrent.
transition	transsource	ref	one	The source state of the transition.
	transtarget	ref	one	The target state of the transition.
	trigger	ref	one	The event that triggers the transition.
event	kind	data	one	The kind of event (signal, call, change, time).
	linkedeventelement	ref	one	The element (signal, operation, boolean expression, or deadline) that raised the event.
action	kind	data	one	The kind of action (send, return, create, destroy, call, terminate, uninterpreted).
	linkedactionelement	ref	one	Depending on the kind of action, the operation or signal that is invoked when the action is executed, or the classifier of which an instance is created.
guard	---	---	---
partition	contents	ref	many	The elements contained in the swimlane.
activitygraph	---	---	---
signal	---	---	---
usecase	---	---	---
actor	---	---	---
usecaseextend	usecaseextbase	ref	one	The use case that is extended.
	usecaseextension	ref	one	The use case that is the extension.
	usecaseextensionpoint	ref	one	The extension point in the extended use case.
usecaseinclude	usecaseincbase	ref	one	The including use case.
	usecaseaddition	ref	one	The included use case.
extensionpoint	---	---	---
component	deploymentlocation	ref	one	The node on which the component is deployed.
componentinstance	componenttype	ref	one	The component that is instantiated.
node	---	---	---
nodeinstance	nodetype	ref	one	The node that is instantiated.
stereotype	extendedelements	ref	many	The set of elements that the stereotype extends.
taggedvalue	tag	data	one	The tag of the tagged value (up to UML 1.3)
	definition	ref	one	Definition of the tagged value (since UML 1.4)
	value	data	one	The value of the tagged value.
tagdefinition	tagtype	data	one	The tag name of a tagged value's tag.
diagram	type	data	one	The type of diagram (class diagram, sequence diagram, etc).
diagramelement	element	ref	one	The element that is shown on the diagram.

Table 7: SDMetrics metamodel elements and attributes for UML1.x models