Answer:
so people can't get your information and use it to their advantage and because you never know what people could do with that information
Explanation:
Answer:
Electronic Data Interchange (EDI)
Explanation:
Electronic Data Interchange
It is the automated interchange of commercial information using a structured format. A process that allows a company to send information to another company electronically rather than on paper. Commercial entities that conduct business electronically are called business partners.
Numerous commercial documents can be exchanged using electronic data interchange, but the two most common are purchase orders and invoices. At a bottom, EDI interchanges the preparation and handling of mail associated with traditional commercial communication. However, the true power of EDI is that it standardizes the information communicated in commercial documents, which makes a "paperless" exchange possible.
Answer:
The expression is :
π[cd) + π(g,h) ],[π(e,f)+π(a,b)])
We will use foreign key and primary key
