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Do not confuse with an InstanceSpecification being used as a specific link

Webel: SysMLv1: TIP: Consider using high level "communication" Associations between Blocks in BDDs and corresponding object diagram BDDs WITHOUT any Ports, with Links typed by the Associations. Object diagrams are great for exploring Slot values, too.

InstanceSpecifications with links and Slots

Gallery

Tutorial

TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo

Section

01:02: UML 101 for model-based systems engineering with SysML

Slide kind

UML Class Diagram

QuantityKind and ValueType example - frequency vs clock frequency vs sound frequency

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Gallery

Tutorial

TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo

Section

08:03: The SysML QuantityKind and Unit

Slide kind

SysML Block Definition Diagram (BDD)

In contrast to Associations, which specify links between any instance of the associated Classifiers, Connectors specify links between instances playing the connected parts only.

Source

Unified Modeling Language 2.5.1

A Connector specifies links that enables communication between two or more instances.

Source

Unified Modeling Language 2.5.1

A ConnectorEnd is an endpoint of a Connector, which attaches the Connector to a ConnectableElement.

Source

Unified Modeling Language 2.5.1

Each Connector may be attached to two or more ConnectableElements, each representing a set of instances that contribute to the instantiation of the containing StructuredClassifier.

Source

Unified Modeling Language 2.5.1

Each link may be realized by something as simple as a pointer or by something as complex as a network connection, and may represent the possibility of instances being able to communicate because their identities are known by virtue of being passed in ...

Source

Unified Modeling Language 2.5.1

A Connector specifies links ... between two or more instances playing owned or inherited roles within a StructuredClassifier.

Source

Unified Modeling Language 2.5.1

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