Data Flow Diagram

Data Flow Diagram.

Data Flow Symbols:

(No universal set of symbols and either style can be used).




















Data Flows in one direction for level 1 diagrams.
Where information comes from and where it goes to, how it gets stored and retrieved, inputs and outputs (for Inputs and Outputs: who puts the information in and where does it end up?). 


















Comments

Post a Comment

Popular posts from this blog

The Digital Divide.

Image
THE DIGITAL DIVIDE. The Digital Divide is when a poor country has less technology and the access to the technology than a rich country does, for example a poor country doesn't have many computers for everyone has to be able have access to things like the internet. Unlike rich countries which may have more computers per-person than can access the internet. Also the location can effect how well a location can be covered be technology, for example some rural areas (even in richer countries) may not have the best cover for mobile phone coverage, or access to the internet. (Also companies don't want to invest lots of money they may not get back very quickly if only a small amount of people live in a small rural area). Money - people need money to access the internet and buy the latest devices, such as computers, smartphones and tablets. Location - access to network coverage and high-speed broadband can vary greatly depending on where you live. Most large towns and citie...
Read more