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UML Sequence Diagram. Design Elements

UML Sequence Diagram shows object interactions arranged in time sequence, how processes operate with one another and in what order and illustrate the sequence of messages exchanged between the objects and classes involved in the scenario.
The vector stencils library "UML sequence diagrams" contains 50 symbols for the ConceptDraw PRO diagramming and vector drawing software.
"Sequence diagram ... building blocks.
If the lifeline is that of an object, it demonstrates a role. Note that leaving the instance name blank can represent anonymous and unnamed instances.
Messages, written with horizontal arrows with the message name written above them, display interaction. Solid arrow heads represent synchronous calls, open arrow heads represent asynchronous messages, and dashed lines represent reply messages. If a caller sends a synchronous message, it must wait until the message is done, such as invoking a subroutine. If a caller sends an asynchronous message, it can continue processing and doesn’t have to wait for a response. Asynchronous calls are present in multithreaded applications and in message-oriented middleware. Activation boxes, or method-call boxes, are opaque rectangles drawn on top of lifelines to represent that processes are being performed in response to the message (ExecutionSpecifications in UML).
Objects calling methods on themselves use messages and add new activation boxes on top of any others to indicate a further level of processing.
When an object is destroyed (removed from memory), an X is drawn on top of the lifeline, and the dashed line ceases to be drawn below it (this is not the case in the first example though). It should be the result of a message, either from the object itself, or another.
A message sent from outside the diagram can be represented by a message originating from a filled-in circle (found message in UML) or from a border of the sequence diagram (gate in UML)." [Sequence diagram. Wikipedia]
The example "Design elements - UML sequence diagrams" is included in the Rapid UML solution from the Software Development area of ConceptDraw Solution Park.
UML sequence diagram symbols
UML sequence diagram symbols, unknown participant, unspecified participant, stop, state invariant, continuations, port, note, message default, lost message, lifeline, entity, lifeline, control, lifeline, boundary, lifeline, actor, lifeline, interaction use, initiator, gate, found message, execution occurrence, combined fragment,
The vector stencils library "UML sequence diagrams" contains 50 symbols for the ConceptDraw PRO diagramming and vector drawing software.
"Sequence diagram ... building blocks.
If the lifeline is that of an object, it demonstrates a role. Note that leaving the instance name blank can represent anonymous and unnamed instances.
Messages, written with horizontal arrows with the message name written above them, display interaction. Solid arrow heads represent synchronous calls, open arrow heads represent asynchronous messages, and dashed lines represent reply messages. If a caller sends a synchronous message, it must wait until the message is done, such as invoking a subroutine. If a caller sends an asynchronous message, it can continue processing and doesn’t have to wait for a response. Asynchronous calls are present in multithreaded applications and in message-oriented middleware. Activation boxes, or method-call boxes, are opaque rectangles drawn on top of lifelines to represent that processes are being performed in response to the message (ExecutionSpecifications in UML).
Objects calling methods on themselves use messages and add new activation boxes on top of any others to indicate a further level of processing.
When an object is destroyed (removed from memory), an X is drawn on top of the lifeline, and the dashed line ceases to be drawn below it (this is not the case in the first example though). It should be the result of a message, either from the object itself, or another.
A message sent from outside the diagram can be represented by a message originating from a filled-in circle (found message in UML) or from a border of the sequence diagram (gate in UML)." [Sequence diagram. Wikipedia]
The example "Design elements - UML sequence diagrams" is included in the Rapid UML solution from the Software Development area of ConceptDraw Solution Park.
UML sequence diagram symbols
UML sequence diagram symbols, unknown participant, unspecified participant, stop, state invariant, continuations, port, note, message default, lost message, lifeline, entity, lifeline, control, lifeline, boundary, lifeline, actor, lifeline, interaction use, initiator, gate, found message, execution occurrence, combined fragment,

UML Notation

Unified Modeling Language (UML) is a language of graphic description for object modeling in the field of software engineering. UML was created for definition, visualization, designing of software systems. UML is an open standard that uses graphic notations for creating visual models of object-oriented software systems.
Two types of diagrams are used in UML: Structure Diagrams and Behavior Diagrams. Behavior Diagrams represent the processes proceeding in a modeled environment. Structure Diagrams represent the elements that compose the system.
The vector stencils library "UML timing diagrams" contains 15 symbols for the ConceptDraw PRO diagramming and vector drawing software.
"The following nodes and edges are typically drawn in a UML timing diagram: lifeline, state or condition timeline, destruction event, duration constraint, time constraint. ...
Lifeline is a named element which represents an individual participant in the interaction. ... lifelines represent only one interacting entity. ...
Lifeline on the timing diagrams is represented by the name of classifier or the instance it represents. It could be placed inside diagram frame or a "swimlane". ...
Timing diagram could show states of the participating classifier or attribute, or some testable conditions, such as a discrete or enumerable value of an attribute. ...
UML also allows the state/ condition dimension be continuous. It could be used in scenarios where entities undergo continuous state changes, such as temperature or density. ...
Destruction occurrence is a message occurrence which represents the destruction of the instance described by the lifeline. It may result in the subsequent destruction of other objects that this object owns by composition. No other occurrence may appear after the destruction event on a given lifeline.
Complete UML name of the occurrence is destruction occurrence specification. Until UML 2.4 it was called destruction event, and earlier - stop.
The destruction event is depicted by a cross in the form of an X at the end of a timeline. ...
Duration constraint is an interval constraint that refers to a duration interval. The duration interval is duration used to determine whether the constraint is satisfied.
The semantics of a duration constraint is inherited from constraints. If constraints are violated, traces become negative which means that system is considered as failed.
Duration constraint is shown as some graphical association between a duration interval and the constructs that it constrains. ...
Time constraint is an interval constraint that refers to a time interval. The time interval is time expression used to determine whether the constraint is satisfied.
The semantics of a time constraint is inherited from constraints. All traces where the constraints are violated are negative traces, i.e., if they occur, the system is considered as failed.
Time constraint is shown as graphical association between a time interval and the construct that it constrains. Typically this graphical association is a small line, e.g., between an occurrence specification and a time interval." [uml-diagrams.org/ timing-diagrams.html]
The example "Design elements - UML timing diagrams" is included in the Rapid UML solution from the Software Development area of ConceptDraw Solution Park.
UML timing diagram symbols
UML timing diagram symbols, value lifeline, time intervals, time constraint, state lifeline, note, lifeline,

UML Diagramming Software

The UML Diagrams are widely used by software developers and software engineers. They can draw the UML Diagrams manually on the paper, but it is incredibly convenient to use the special UML diagramming software. The UML diagramming software allows you to draw the UML Diagrams in a few minutes.

Cross Functional Flowchart Symbols

The excellent possibility to create attractive Cross Functional Flowcharts for step-by-step visualization the operations of a business process flow of any degree of detailing is offered by ConceptDraw’s Cross-Functional Flowcharts solution. The extensive selection of commonly used vector cross functional flowchart symbols allow you to demonstrate the document flow in organization, to represent each team member’s responsibilities and how processes get shared or transferred between different teams and departments.

BPMN 2.0

ConceptDraw DIAGRAM diagramming and vector drawing software offers the Business Process Diagram Solution from the Business Processes Area of ConceptDraw Solution Park with powerful tools to help you easy represent the business processes and create the business process diagrams based on BPMN 2.0 standard.

UML diagram, UML modeling Rapid UML

UML diagram, UML modeling
Rapid UML solution extends ConceptDraw DIAGRAM software with templates, samples and libraries of vector stencils for quick drawing the UML diagrams using Rapid Draw technology.

Design Data Flow. DFD Library

Three DFD libraries, 49 vector shapes. Use these DFD symbol libraries to design the process-oriented models, data-oriented models, data flowcharts, data process diagrams, structured analysis diagrams, and information flow diagrams.
HelpDesk

How to Add and Edit Connector Text

ConceptDraw DIAGRAM gives you some tools for connecting shapes: Direct Connectors, Smart, Arc, Bezier, Curve and Round Connectors. Direct Connectors are direct lines from the point to the point. Smart, Arc, Bezier, Curve and Round Connectors are almost the same as Direct Connectors. However, they automatically move around other objects. You can use Chain, or Tree connection mode for connection of multiple objects with any type of connectors. ConceptDraw DIAGRAM allows you to add and move text on a connector the same way that you add and move text on other any object.

Time - Design Elements

Many of us want to be able to create designs efficiently yet quickly. ConceptDraw DIAGRAM will help you to make awesome drawings without having to design all those Time Elements. These elements include graphs, symbols, cliparts, visual data representation and a whole lot of other stuff.

Network Security Devices

How to describe the necessity of using network security devices and visually illustrate this information? Now, it's very easy thanks to the ConceptDraw DIAGRAM diagramming and vector drawing software extended with Network Security Diagrams Solution from the Computer and Networks Area of ConceptDraw Solution Park.

How to draw Metro Map style infographics? (New York)

How to draw Metro Map style infographics of New York subway.
New York Subway has a long history starting on October 27, 1904. Since the opening many agencies have provided schemes of the subway system. At present time are 34 lines in use. This page present New York City subway map construct with Metro Map Solution in Conceptdraw DIAGRAM software. This is a one-click tool to add stations to the map. It lets you control the direction in which you create new stations, change lengths, and add text labels and icons. It contains Lines, Stations, and Landmarks objects
HelpDesk

Accounting Information Systems Flowchart Symbols

An accounting Information system is a combination of software and hardware, as well as organizational support. Information system - it is not only the software and computers with network equipment but also a list of instructions and standards which can be notated using Accounting information systems flowchart symbols. All information systems can be divided into information retrieval and data processing systems. The data Flow model is a hierarchical model. Each process can be divided into structural components, that depict by corresponding flowchart symbols, showing the accounting information system in communication with the external environment. The major components of an accounting information systems flowchart are entities, processes, data stores, and data flows. The set of standard accounting information flowchart symbols is intended to show the relationships between the system components. ConceptDraw DIAGRAM can help to draw clear accounting information system diagrams using special flowchart symbols.