6 Glossary

advertisement -- A public notice. An entry in the Advert Directory.

advertise -- To make publicly and generally known.

ancestor -- An element found by following a path of one or more parent relationships.

attribute -- A description of a named slot of a specified type in a class; each object of the separately holds a value of the type.

binding -- The assignment of values to parameters to produce an individual element from a parameterised element.

-- The descriptor for a set of objects that share the same attributes, operations, methods, relationships, and behaviour.

-- A physical replaceable part of a system that packages implementation and conforms to and provides a realization of a set of interfaces.

connection -- A bi-directional communication channel.

constructor -- A class-scope that creates and initialises an of a class.

descriptor -- A model element that describes the common properties of a set of instances, including their structure, relationships, behaviour, constraints, purpose, and so on.

destructor -- A class-scope that destroys an of a class.

-- An individual entity with its own identity and value. A descriptor specifies the form and behaviour of a set of with similar properties. An has identity and values that are consistent with the specification in the descriptor.

interface -- A named set of operations that characterise the behaviour of an element.

model element -- An element that is an abstraction drawn from the system being modelled.

-- A run-time physical object that represents a computational resource, which generally has at least memory and often processing capability.

null -- null defines in a language and type dependent way the absence of a value or object.

object -- A discrete entity with a well-defined boundary and identity that encapsulates state and behaviour.

-- A specification of a transformation or query that an object may be called to execute.

private -- A visibility value indicating that the given element is not visible outside its own namespace even to descendants of the namespace.

-- A heavyweight unit of concurrency and execution in an operating system.

public -- A visibility value indicating that the given element is visible outside its own namespace.

resource -- An entity providing some capability. Example for resources are computers (providing compute power), networks (providing data transport capabilities), services (providing capabilities specific to the service). Resource Management Systems manage (discover, query, reserve, schedule, utilize, ...) one or more types of resources, but typically not all types simultaneously.

realize -- To provide the implementation for a specification element.

specialization -- To produce a more specific description of a model element by adding children.

state -- A condition or situation during the life of an object during which it satisfies some condition, performs some activity, or waits for some event.

stream -- A uni-directional communication channel.

template -- A parameterised model element. To use it, the parameters must be bound to actual values.