Frequent question: How do you write a system architecture document?

What is included in a system architecture document?

Document overview

A general description of the system. The logical architecture of software, the layers and top-level components. The physical architecture of the hardware on which runs the software. The justification of technical choices made.

How do I create a system architecture document?

How to draw an architectural diagram

  1. Document your shapes. …
  2. And the edges. …
  3. Keep your arrows consistent. …
  4. Use colors sparingly. …
  5. Use multiple diagrams, if necessary. …
  6. Merge incomplete diagrams. …
  7. Include legends/keys/glossaries. …
  8. Use diagramming software.

What is architectural documentation?

Architectural documentation records specific details and features, such as building stone shaping techniques, mortar application, doorways, hearths, and vents to name a few. This is done by creating detailed drawings or scaled digital photographs of each wall within a site.

How do you describe system architecture?

System architecture is a conceptual model that describes the structure and behavior of multiple components and subsystems like multiple software applications, network devices, hardware, and even other machinery of a system.

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How do you write a detailed design document?

To start, the following is a list of sections that you should at least consider including in your next design doc:

  1. Title and People. …
  2. Overview. …
  3. Context. …
  4. Goals and Non-Goals. …
  5. Milestones. …
  6. Existing Solution. …
  7. Proposed Solution. …
  8. Alternative Solutions.

What is a system design document?

The System Design Document (SDD) describes how the functional and nonfunctional requirements recorded in the Requirements Document, the preliminary user-oriented functional design recorded in the High Level Technical Design Concept/Alternatives document, and the preliminary data design documented in the Logical Data …

What should a solution architecture document contain?

This document should include the purpose, glossary, background, assumptions, references and other important information. Also, including the methodologies is also important.

How do I create an architecture diagram in Word?

Click in your document where you want to create the drawing. On the Insert tab, in the Illustrations group, click Shapes. When you find the shape you want to insert, double-click to insert it automatically, or click and drag to draw it in your document.

What is the difference between a system and a system architecture?

A system generally consists of multiple components and subsystems. They all operate together to implement the entire system. A system architecture description is a formal description that explains the structure and the behavior of the entire system.

What are types of system architecture?

Three types of system architectures are identified, integrated, distributed and mixed, (partly integrated and partly distributed). It is shown that the type of interfaces defines the type of architecture. Integrated systems have more interfaces, which furthermore are vaguely defined.

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What is difference between design and system architecture?

Software architecture shows the system’s structure and hides the implementation details, focusing on how the system components interact with one another. Software design, on the other hand, concentrates on the system’s implementation, often delving into considerable detail.

How is documentation of software architecture done?

The idea is to use 4 different granularity (or zoom) levels for documenting software architecture:

  1. Level 1: System Context diagram.
  2. Level 2: Container diagram.
  3. Level 3: Component diagram.
  4. Level 4: Code diagram.

What are the principles of good architectural documentation?

Common design principles

  • Separation of concerns. A guiding principle when developing is Separation of Concerns. …
  • Encapsulation. …
  • Dependency inversion. …
  • Explicit dependencies. …
  • Single responsibility. …
  • Don’t repeat yourself (DRY) …
  • Persistence ignorance. …
  • Bounded contexts.

What are the different types of documentation?

The four kinds of documentation are:

  • learning-oriented tutorials.
  • goal-oriented how-to guides.
  • understanding-oriented discussions.
  • information-oriented reference material.