Author: Prashant MJ

Data Flow Diagram | Glossary

Prashant MJ Leave a comment

Definition:

Data Flow Diagram (DFD) is a graphical representation of the “flow” of data through a system creating an overview without going in to detail which can be elaborated. DFD diagrams helps in collecting and understanding requirements as well as designing systems.

DFD is visualization technique which enables communication and collaboration of key information. Shows what kind of information will be input and output from the system, how data flow through the system and where data will be stored. DFD helps users to visualize how the system will operate, what the system will accomplish and how the system will be implemented.

This modeling helps in developing any system, visualizing major steps and data involved in system processes in a top-down approach to system design also known as Bubble Chart.

Further Reading:

https://en.wikipedia.org/wiki/Data_flow_diagram
http://tracks.roojoom.com/r/14373
https://www.visual-paradigm.com/guide/data-flow-diagram/what-is-data-flow-diagram/

User Centered Design | Glossary

Prashant MJ Leave a comment

Definition:

User Centered design (UCD) is a process where designers, developers focuses on gaining deep understanding of the users. This is not only from interfaces and technology perspective but at each step keen attention is given for usability goals, context of the use, user characteristics, workflow of the product and usability testing with actual users.

This creates highly usable products which not only analyzes the way user consumes a product but also validates the behaviour of the user in real world. Tests conducted with or without actual users during requirements, pre-production and post production stages ensures development is user centric.

Below are the Principles that will ensure a User-centered design:

  • The design is based upon an explicit understanding of users, tasks and environments
  • Users are involved throughout design and development
  • The design is driven and refined by user-centered evaluation
  • UCD process is iterative
  • Designing the overall  user experience
  • The design team includes multidisciplinary skills and perspectives
  • This perspective of User Centered design increases product usefulness and usability.

Further Reading:

https://en.wikipedia.org/wiki/User-centered_design
https://www.usability.gov/what-and-why/user-centered-design.html
https://en.wikipedia.org/wiki/User-centered_design
https://www.interaction-design.org/literature/topics/user-centered-design