High-level design document This document includes a high-level architecture diagram depicting the structure of the system, such as the hardware, database architecture, application architecture (layers), application flow (navigation), security architecture and technology architecture.
Table of Contents
What should a HLD document contain?
High-level design document This document includes a high-level architecture diagram depicting the structure of the system, such as the hardware, database architecture, application architecture (layers), application flow (navigation), security architecture and technology architecture.
What is LLD and HLD in documentation?
It describes the relation between various modules and functions of the system. data flow, flow charts and data structures are covered under HLD. LLD is Screen Shots of design. Low Level Design (LLD) is like detailing the HLD. It defines the actual logic for each and every component of the system.
What should a LLD contain?
LLD describes the class diagrams with the methods and relations between classes and program specs. It describes the modules so that the programmer can directly code the program from the document.
What does a high level document look like?
A high-level design document (HLDD) describes the architecture used in the development of a particular software product. It usually includes a diagram that depicts the envisioned structure of the software system. Since this is a high-level document, non-technical language is often used.
How do you write an HLD document?
5.2 Contents of an HLD
- 1 Architectural Plan. An architectural plan is the first ingredient of a high-level design document.
- 2 Application Modules. Once you have completed the description of all the major components in the solution’s ecosystem, it’s time to zoom in to the application level.
- 3 Data Flow and Use Cases.
Which comes first HLD or LLD?
It describes detailed description of each and every module means it includes actual logic for every system component and it goes deep into each modules specification….Difference between High Level Design and Low Level Design :
| S.No. | HIGH LEVEL DESIGN | LOW LEVEL DESIGN |
|---|---|---|
| 02. | High Level Design in short called as HLD. | Low Level Design in short called as LLD. |
What is the difference between LLD and HLD?
The HLD changes the client or business requirement into a high-level solution. The LLD changes the high-level solution to a comprehensive solution.
What is low level and high-level design?
High Level Design is the general system design means it refers to the overall system design. Low Level Design is like detailing HLD means it refers to component-level design process.
How do you design documents?
Key guidance in the design of documents includes:
- Use at least 12 point.
- Use a clear, easy to read font.
- Make important points stand out.
- Use bold or bigger sized font to emphasise text.
- Text should be set horizontally.
- Avoid splitting a word between two lines.
- Templates with accessible formatting.
- Use accessible formatting.
How do I prepare for LLD?
How to Prepare for the LLD Interview
- Learn at least one Object Oriented Language ( C++ / Java / Python or C# )
- Study about the SOLID and other Object Oriented Principles.
- Learn all the common Design Patterns and their applications.
- Explore some open-source projects and try to understand the best practices.