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Hence the development of the Open Systems Interconnect (OSI) Model which lead to the development of the Internet and the Ethernet standard and the TCP/IP protocol, both of which nearly the entire Internet runs on today.
#9, in what way have phones and computers converged? Why is this convergence occurring?
The personal productivity tasks of communication as it relates to the use of telephones and computer systems has long been an area developers and entrepreneurs have poured time and money into. Now with the concept of the Mobile Web, it's possible to have PDAs and cell phones that make it possible to access any website, any e-mail account, from any location there is a cell phone signal. The impetus is the overlap of personal productivity processes.
Q.#9, Read the information on the Thawte Web site about how users can be authenticated (Web of Trust). Briefly explain how the system works. Do you think this is a secure and reliable system?
The system uses as series of authentication algorithms to verify the identify a person is who they say there are. This is a secure and reliable system to the extent developers use the Application Programmer Interfaces (APIs) and other mechanisms for integrating these techniques into applications.
Transaction and Operations):
Review questions 2, What is electronic data interchange (EDI)? Why has EDI taken so long to catch on? Will business ever use EDI for all transactions?
EDI is a batch-oriented protocol used for completing transactions between companies, and has been in use as an order processing, validation and transaction technique for over forty years. EDI has many limitations, foremost being its approach to batch-oriented processing (most companies run it overnight) and the highly defined series of commands it uses. There is little flexibility in the programming of EDI commands; it is very inflexible. As a result of these factors and the fact that it is slow and increasingly out of touch with the needs of businesses running real-time systems, EDI is stagnating at the minority of transactions today.
6, Why has it taken so long for new payment mechanisms to be adopted?
Because each company's order management system is uniquely different and aligned with their specific approaches to doing business. No two companies do business and manage orders the same way, hence the wide variation in how new payment systems are implemented and adopted.
What is meant by the term "data quality"? Give three examples of problems with data quality.
Data quality refers to the attribute of data that is represents what it is supposed to. Three examples of data quality problems include incomplete data, incorrectly entered data, and misanalyzed data.
On the basis of the cost figures in the text, create a spreadsheet and compare the estimated annual costs for the carious online payment mechanisms for three hypothetical companies. The first company sells digital content for about $20 each and anticipates about 5,000 sales per year. The second company sells music for $0.75 per song, but expects people to download and pay for 5 to 10 songs at a time. It anticipates 500,000 customers. The third company sells stereo and video equipment ranging from $400 to $2,000 per item, and expects about 10,000 sales the first year. On the basis of the data, recommend a payment mechanism for each company.
A customers songs or units price per song or unit
For the song sales, there needs to be an online order capture and management system that can handle all forms of credit card transactions. For the second site with the small transaction size of 75 cents, there needs to be an account-based order system created where customers can create a debit balance and then get credits against it. Finally the larger appliance sales there is the need for managing more complex forms of credit including the definition of credit terms and the offer of a credit card to cover the purchase itself.
Q.#4 What are the primary features and capabilities of an enterprise resource planning system (ERP)?
An ERP system acts as the central coordination system for the production operations of a company, and includes control over supply chain, production scheduling, production operations, pricing, fulfillment and service.
A and #9, Why is[continue]
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