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A use case diagram [1] is a graphical depiction of a user's possible interactions with a system. A use case diagram shows various use cases and different types of users the system has and will often be accompanied by other types of diagrams as well. The use cases are represented by either circles or ellipses. The actors are often shown as stick ...
For the Online Shopping System, the total estimated size to develop the software is 125.06 Use Case Points. Now that the size of the project is known, the total effort for the project can be estimated. For the Online Shopping System example, 28 man hours per use case point will be used. Estimated Effort = UCP x Hours/UCP
Use case analysis usually starts by drawing use case diagrams. For agile development, a requirement model of many UML diagrams depicting use cases plus some textual descriptions, notes, or use case briefs would be very lightweight and just enough for small or easy project use. As good complements to use case texts, the visual diagram ...
If an intermediary is present, then the sale and purchase transaction is called consumer-to-consumer, such as an online auction conducted on eBay.com. This payment system has been widely accepted by consumers and merchants throughout the world, and is by far the most popular method of payments especially in the retail markets. [ 1 ]
The popularity of online shopping continues to erode sales of conventional retailers. For example, Best Buy, the largest retailer of electronics in the U.S. in August 2014 reported its tenth consecutive quarterly dip in sales, citing an increasing shift by consumers to online shopping. [51] Amazon.com has the largest market share in the United ...
Consumer to consumer (or citizen-to-citizen) electronic commerce involves electronically facilitated transactions between consumers through some third party. A common example is an online auction , in which a consumer posts an item for sale and other consumers bid to purchase it; the third party generally charges a flat fee or commission .
For example, in the European Union the Consumer Rights Directive of 2011 obliges member states to give purchasers the right to return goods or cancel services purchased from a business away from a normal commercial premises, such as online, mail order, or door-to-door, with limited exceptions, within two weeks or one year if the seller did not ...
Consumer interests can also serve consumers, consistent with economic efficiency, but this topic is treated in competition law. Consumer protection can also be asserted via non-government organizations and individuals as consumer activism. Efforts made for the protection of consumer's rights and interests are: The right to satisfaction of basic ...