Tag: Data

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/

Wideband Delphi Method | Glossary

Karan Negi Leave a comment

Definition

The ‘Wideband Delphi Method’ is a variation of ‘ The Delphi Method’. It is a significant estimation technique in Software Development. It is a commonly taught and recognized subject in Agile Project Management. The central focus is on the “commitment velocity”. It’s approach has been popularized towards Task Estimation in various industries, ranging from statistical data collection, to sales and marketing.

This method of estimation involved a panel of experts. They are made to answer questions in multiple rounds, and a facilitator provides summary of the forecasts from the previous rounds, upon which the experts revise their earlier answers (So on and so forth). It is believed that this process will eventually lead the group to converge towards the “correct” answer

Further Reading

  •  “Agile Estimating and Planning (Robert C. Martin Series)” (book), by Mike Cohn.