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A software architecture is a specialization of an architecture for software-based systems, including the description of software compositions, component functions, and their scheduling.

Use software architectures in System Composer™ to author software architecture models composed of software components, ports, and interfaces. Design your software architecture model, define the execution order of your component functions, simulate your design in the architecture level, and generate code.

A software component is a specialization of a component for software entities, including its interfaces.

Implement a Simulink^® export-function, rate-based, or JMAAB model as a software component, simulate the software architecture model, and generate code.

A software composition is a diagram of software components and connectors that represents a composite software entity, such as a module or application.

Encapsulate functionality by aggregating or nesting multiple software components or compositions.

A function is an entry point where a transfer of program control occurs and can be defined in a software component.

You can apply stereotypes to functions in software architectures, edit sample times, and specify the function period using the Functions Editor.

A function element describes the attributes of a function in a client-server interface.

Edit the function prototype on a function element to change the number and names of inputs and outputs of the function. Edit function element properties as you would edit other interface element properties. Function argument types can include built-in types as well as bus objects. You can specify function elements to support two types of execution. Asynchronous execution is when the client sends a request to the server, the function executes asynchronously based on the priority order, and the function returns the output arguments to the client. Synchronous execution is when the client sends a request to the server, the function runs immediately, and the function returns the output arguments to the client.

A function argument describes the attributes of an input or output argument in a function element.

You can set the properties of a function argument in the Interface Editor just as you would other value types: Type, Dimensions, Units, Complexity, Minimum, Maximum, and Description.

A service interface defines the functional interface between client and server components. Each service interface consists of one or more function elements.

Once you have defined a service interface in the Interface Editor, you can assign it to client and server ports using the Property Inspector. You can also use the Property Inspector to assign stereotypes to service interfaces.

A server is a component that defines and provides a function.

A server component is where the function is defined. You can implement function behavior in a Simulink export-function model.

A client is a component that sends a request to the server.

A client component is where the function is called. The implementation of function call behavior is dependent on the synchronicity of the function execution.

A class diagram is a graphical representation of a static structural model that displays unique architecture types of the software components optionally with software methods and properties.

Class diagrams capture one instance of each referenced model and show relationships between them. A component diagram view can be optionally represented as a class diagram for a software architecture model.