Week 3:
What are the two notations for ERDs?
The two notations for ERDs are Chen’s Database Notation and Crow’s Foot Database Notation. Chen’s Database Notation using different shapes that represent different aspects, while Crow’s Foot Database Notation uses symbols that look like crow’s feet.
Week 4:
Why is it important to have a good digital identity?
Having a good digital identity is important because all the data that is stored as part of your identity follows you everywhere you go. In our increasingly technologically advanced society, having a good digital identity is becoming more important as time goes on.
A picture says a thousand words and an ERD, an entity relationship diagram, truly does. An ERD, is a visual representation of data. It displays entities, attributes, and their relationship to one another. As a visual person I find ERD’s very helpful and easy to follow. It puts a lot of data into an easy-to-understand format. Seeing each object and it’s attributes provides clear information about each object. Also, seeing the relationship between objects. The various symbols included in the diagram communicate the status of each entity and their relationship with other entities in a clear fashion.
Hi Beckett, digital identity is the information of an entity that represents an external agent. That external agent could be a person, application, organization, etc. A person’s digital identity is comprised of all of their personal information (i.e: contact info, address, ssn, etc). A digital identity also features all of that individual’s online activity. It is definitely important to be careful of when uploading something to the internet, as that then becomes apart of that individual’s digital identity.