Develpoment Models Elizabeth Hicks Strayer University IT 106 Dr. Hines June 3, 2013 Software Development Models A software lifecycle model is a standardized format for planning, organizing, and running a new development project. Hundreds of different kinds of models are known and used. Some of these include waterfall, code and fix, spiral, rapid prototyping, unified process, agile methods extreme programming, and COTS. Many are minor variations on just a small number of basic models. It is important
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Review Questions for Test-1 (with Answers): Chapter 1: Introduction to Data Communications Outline 1.1 Network Basics 1.2 Network Layer Model (most important) 1.3 Network Standards 1.4 Future Trends (least important) Answers to End-of-Chapter Questions 1. Describe the progression of communications systems from the 1800s to the present. Communications systems progression from the 1800s to the present: 1837 Invention of the telegraph 1876 Invention of the
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domestic market is important, however, Netflix should jump out of its own circle into a new market to gain the first mover advantage. Looking at the global market, China is a good choice for Netflix’s next station. Using the Porter’s Five Forces model, Netflix can examine its advantages and disadvantages see whether entering China is good choice: * Bargaining power of customers China has a growing economy with a large group of new middle-class, who are able and willing to consume on entertainment
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database normalization 4.15 multi-value dependency occurs when the presence of one or more rows in a table implies the presence of one or more other rows in the same tables. Ex: Car Company that manufacture many models of cars, but always make both red and blue colors of each models. 4.16 4.17 Forth-normal form is a level of database normalization where there is no non-trivial decency other than a candidate key 4.18 Domain/key normal form is a normal form used in a database normalization that
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boost to grow faster than normal.in addition it’s a lot easier to finance by the bank. The franchisee strategy entails a few dangers associated with the model. Having to deal with fierce market competition from established brands and their popularity, managing seasonal inputs and acquiring a failing franchisee may drag the organisation down. This model also helps leveraging off synergy, from Salsa’s fresh mix grill. This subsidiary of Boost juice has complementary products to support its healthy image
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Open System Interconnection (OSI) The Open Systems Interconnection (OSI) model is considered a critical element regarding all computer network design since 1984. The OSI model is a basic model detailing the protocols a network and the related equipment illustrating how they work together through communication. The International Standards Organization (ISO) has created the technology for the OSI model to be maintained at high standards and helps today’s technology remain of constant use when
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too, has been hailed for its global standard efficiency and business innovations. It was one of the first corporations that integrated use of computers in its operations in all its branches. The mission statement reflects on the founder’s business model of passing savings to his clientele and amassing profits through volume sales. This principle has made consumers feel more welcome and their needs taken care of over the years. The cost-cutting initiatives embraced by the company operations have been
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– In the relational model, the conceptual schema presents data as a set of tables. • DBMS maps from conceptual to physical schema automatically. • Physical schema can be changed without changing application: – DBMS must change mapping from conceptual to physical. • Referred to as physical data independence. 5 Conceptual Data Level (con’t) Application Conceptual view of data DBMS Physical view of data 6 External Data Level • In the relational model, the external schema
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modifications and implementations if needed. Services: The scan shows the use of the following services: Services Use Msrpc A tool for running processes on a remote computer. netbios-ssn It provides services related to the session layer of the OSI model allowing the applications on a separate computer to communicate microsoft-ds This port replaces the notorious Windows NetBIOS trio (ports 137-139), for all versions of Windows after NT, as the preferred port for carrying Windows file sharing and
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software development in which development proceeds sequentially through a series of phases. Progress "flows" from one stage to the next, much like the waterfall that gives the model its name. Stages 1.Project Planning 2. Requirement gathering 3.Design 4.Develop 5.Testing 6.Production 7.Support Advantages The waterfall model, as described above, offers numerous advantages for software developers. First, the staged development cycle enforces discipline: every phase has a defined start and end
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