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The vector stencils library "UML use case diagrams" contains 25 symbols for the ConceptDraw PRO diagramming and vector drawing software.
"Use case diagrams are usually referred to as behavior diagrams used to describe a set of actions (use cases) that some system or systems (subject) should or can perform in collaboration with one or more external users of the system (actors). Each use case should provide some observable and valuable result to the actors or other stakeholders of the system. ...
Use case diagrams are in fact twofold - they are both behavior diagrams, because they describe behavior of the system, and they are also structure diagrams - as a special case of class diagrams where classifiers are restricted to be either actors or use cases related to each other with associations. ...
Use case is usually shown as an ellipse containing the name of the use case. ...
Name of the use case could also be placed below the ellipse. ...
If a subject (or system boundary) is displayed, the use case ellipse is visually located inside the system boundary rectangle. Note, that this does not necessarily mean that the subject classifier owns the contained use cases, but merely that the use case applies to that classifier. ...
A list of use case properties - operations and attributes - could be shown in a compartment within the use case oval below the use case name. ...
Use case with extension points may be listed in a compartment of the use case with the heading extension points. ...
A use case can also be shown using the standard rectangle notation for classifiers with an ellipse icon in the upper right-hand corner of the rectangle and with optional separate list compartments for its features. ...
Subject (sometimes called a system boundary) is presented by a rectangle with subject's name, associated keywords and stereotypes in the upper left corner. Use cases applicable to the subject are located inside the rectangle and actors - outside of the system boundary. ...
Standard UML notation for actor is "stick man" icon with the name of the actor above or below of the icon. Actor names should follow the capitalization and punctuation guidelines for classes. The names of abstract actors should be shown in italics. ...
Custom icons that convey the kind of actor may also be used to denote an actor, such as using a separate icon(s) for non-human actors. ...
An actor may also be shown as a class rectangle with the standard keyword «actor», having usual notation for class compartments ...
An actor can only have binary associations to use cases, components, and classes. ...
An association between an actor and a use case indicates that the actor and the use case somehow interact or communicate with each other.
Only binary associations are allowed between actors and use cases.
An actor could be associated to one or several use cases. ...
A use case may have one or several associated actors." [uml-diagrams.org/ use-case-diagrams.html]
The example "Design elements - UML use case diagrams" is included in the Rapid UML solution from the Software Development area of ConceptDraw Solution Park.
UML use case diagram symbols
UML use case diagram symbols, use case, system boundary, package, note, interface, frame, fragment, actor,

mechanical engineering, mechanical design software, mechanical drawing symbols, mechanical drawing software Mechanical Engineering

mechanical engineering, mechanical design software, mechanical drawing symbols, mechanical drawing software
This solution extends ConceptDraw PRO v.9 mechanical drawing software (or later) with samples of mechanical drawing symbols, templates and libraries of design elements, for help when drafting mechanical engineering drawings, or parts, assembly, pneumatic,

event-driven process chain diagram, EPC diagram, process chain flowchart Event-driven Process Chain Diagrams

event-driven process chain diagram, EPC diagram, process chain flowchart
Event-driven Process Chain (EPC) Diagram is a type of flowchart widely used for modeling in business engineering and reengineering, business process improvement, and analysis. EPC method was developed within the Architecture of Integrated Information Systems (ARIS) framework.

network topology diagram software, network icons, network diagram template, networking icons available, how to draw a network diagram Computer Network Diagrams

network topology diagram software, network icons, network diagram template, networking icons available, how to draw a network diagram
Computer Network Diagrams solution extends ConceptDraw PRO software with samples, templates and libraries of vector stencils for drawing the computer network topology diagrams.

pvc pipe furniture plans, pvc pipe plans, plumbing plans examples, How to read plumbing plans? plumbing floor plan, plumbing layout plan, half pipe plans, pipe bender plans, plumbing plan symbols Plumbing and Piping Plans

pvc pipe furniture plans, pvc pipe plans, plumbing plans examples, How to read plumbing plans? plumbing floor plan, plumbing layout plan, half pipe plans, pipe bender plans, plumbing plan symbols
Plumbing and Piping Plans solution extends ConceptDraw PRO v10.2.2 software with samples, templates and libraries of pipes, plumbing, and valves design elements for developing of water and plumbing systems, and for drawing Plumbing plan, Piping plan, PVC Pipe plan, PVC Pipe furniture plan, Plumbing layout plan, Plumbing floor plan, Half pipe plans, Pipe bender plans.

entity-relationship diagram, ER-diagram, database ERD Entity-Relationship Diagram (ERD)

entity-relationship diagram, ER-diagram, database ERD
Entity-Relationship Diagram (ERD) solution extends ConceptDraw PRO software with templates, samples and libraries of vector stencils from drawing the ER-diagrams by Chen's and crow’s foot notations.
The vector stencils library "Carbohydrate metabolism" contains 25 icons of metabolite symbols.
Use these shapes for drawing carbohydrate metabolism schematics, biochemical diagrams and metabolic pathways maps.
"Carbohydrates are a superior short-term fuel for organisms because they are simpler to metabolize than fats or those amino acids (components of proteins) that can be used for fuel. In animals, the most important carbohydrate is glucose. The concentration of glucose in the blood is used as the main control for the central metabolic hormone, insulin. Starch, and cellulose in a few organisms (e.g., some animals ... and ... microorganisms), both being glucose polymers, are disassembled during digestion and absorbed as glucose. Some simple carbohydrates have their own enzymatic oxidation pathways, as do only a few of the more complex carbohydrates. The disaccharide lactose, for instance, requires the enzyme lactase to be broken into its monosaccharides components; many animals lack this enzyme in adulthood." [Carbohydrate metabolism. Wikipedia]
The shapes example "Design elements - Carbohydrate metabolism" is included in the Biology solution from the Science and Education area of ConceptDraw Solution Park.
Carbohydrate metabolite symbols
Carbohydrate metabolite symbols, pyruvic acid, pyruvate, phosphoenolpyruvic acid, PEP, phosphoenolpyruvate, lactic acid, lactate, milk acid, glycolysis, glycerate, glyceric acid, glyceraldehyde, glyceric aldehyde
, glyceraldehyde 3-phosphate, triose phosphate, 3-phosphoglyceraldehyde, G3P, GADP, GAP, TP, GALP, PGAL, glucose, D-glucose, dextrose, grape sugar, glucose 6-phosphate, Robison ester, gluconolactone, ghlucono delta-lactone, GDL, gluconic acid, gluconate, fructose 6-phosphate, fructose 1,6-bisphosphate, Harden-Young ester, dihydroxyacetone phosphate, DHAP, glycerone phosphate, acetyl coenzyme A, acetyl-CoA, acetic acid, acetate, ethanoic acid, Entner-Doudoroff pathway phosphorylating, Entner-Doudoroff pathway non-phosphorylating
, 6-phosphogluconolactone, 6-phosphoglucono-δ-lactone, 6-phosphogluconic acid, 6-phosphogluconate, 3-phosphoglyceric acid, 3PG, glycerate 3-phosphate, GP, 2-phosphoglyceric acid, 2PG, 2-phosphoglycerate, 2-keto-3-deoxygluconate, KDG, 2-dehydro-3-deoxy-D-gluconate,  2-keto-3-deoxy-D-gluconic acid, 2-keto-3-deoxy-D-gluconate, 3-deoxy-2-oxo-D-gluconate, 2-keto-3-deoxygluconate, 3-deoxy-D-erythro-hex-2-ulosonic acid, 2-keto-3-deoxy-6-phosphogluconate, KDPG, 13-bisphosphoglyceric acid, 13-bisphosphoglycerate, 13BPG,

chemical drawings, chemistry equation symbols, chemical drawing software Chemistry

chemical drawings, chemistry equation symbols, chemical drawing software
This solution extends ConceptDraw PRO software with samples, template and libraries of vector stencils for drawing the Chemistry Illustrations for science and education.

entity-relationship diagram, ER-diagram, database ERD Entity-Relationship Diagram (ERD)

entity-relationship diagram, ER-diagram, database ERD
An Entity-Relationship Diagram (ERD) is a visual presentation of entities and relationships. That type of diagrams is often used in the semi-structured or unstructured data in databases and information systems. At first glance ERD is similar to a flowch