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Chapter 1

Chapter 1. Part 2. Modeling The Business Operation. All driven by the Web. Globalization Integrated Technology Rapid Growth of Cloud based computer systems. B2C (Business-to-Consumer) B2B (Business-to-Business). What the Systems Analyst Needs To Understand.

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Chapter 1

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  1. Chapter 1 Part 2 Modeling The Business Operation

  2. All driven by the Web Globalization Integrated Technology Rapid Growth of Cloud based computer systems B2C (Business-to-Consumer) B2B (Business-to-Business)

  3. What the Systems Analyst Needs To Understand Business ModelProfileProcess

  4. A Systems analyst will use “modelling”to represent a company operations and it’sinformation needs.

  5. Modelling Involves a business profile with A set of different models that document a business operation

  6. The Business Model is “The Way We Do Business”

  7. Example Bricks and clicks business model Business model by which a company integrates both offline (bricks) and online (clicks) presences. One example of the bricks-and-clicks model is when a chain of stores allows the user to order products online, but lets them pick up their order at a local store.

  8. Example Cutting out the middleman model The removal of intermediaries in a supply chain: "cutting out the middleman". Instead of going through traditional distribution channels, which had some type of intermediate (such as a distributor, wholesaler, broker, or agent), companies may now deal with every customer directly, for example via the Internet.

  9. Example Direct sales model Direct selling is marketing and selling products to consumers directly, away from a fixed retail location. Sales are typically made through party plan, one-to-one demonstrations, and other personal contact arrangements. A text book definition is: "The direct personal presentation, demonstration, and sale of products and services to consumers, usually in their homes or at their jobs."

  10. So what is a Business Profile? It is the Starting Point fro the Modelling Process It’s a look at the companies Mission Functions The Organization It’s Products and Services It’s Customers and Suppliers It’s Competitors Future Direction

  11. The Business Process Simply a set of transactions, events with results that describea business process EventReceive Sales Order ProcessCheck Customer Status ProcessVerify Credit ResultComplete Sales Order ProcessEnter Customer Order Data 1 Event 3 Processes 1 Result

  12. Types of Information Systems Enterprise Computing Developed for business users as an entire platform that can be applied broadly across an organization and then further customized by users within each area. Enterprise computing is intended to offer integrated solutions to these problems.

  13. Types of Information Systems Transaction Processing Systems Collects, stores, modifies and retrieves the data transactions of an enterprise.A transaction is any event in which data is generated or modified before storage in an information system A company depends on the reliable processing of transactions to ensure that customer orders and payments are met on time

  14. Types of Information Systems Business Support Systems Business Support System or enhances the relationship of service providers with their customers. BSS is more software oriented which deals with processes like taking orders from customer, ensuring that order is completed, processing the bills, and collecting the payment. Example SHAW

  15. Types of Information Systems Knowledge Management Systems Knowledge management involves data mining and some method of operation to push information to users. Knowledge management is a discipline that promotes sharing all of an enterprise's information assets. These assets may include databases, documents, policies and procedures. By using this information companies and employees can increase their productivity.

  16. Types of Information Systems User Productivity Systems EmailVoice MailAutomated CalendarsSpreadsheetsDesktop PublishingOffice Intranets

  17. Types of Information Systems Systems Integration Information from a transaction can update many inetegrated systems. Example… You buy a product….a warranty file couldbe updated along with a registration file, a warranty claim file, a billing /paymet file etc etc

  18. So A Systems Analyst must understand “Business Operations” But

  19. They Also Need to Understand Modeling and Prototyping and Software tools to design systems

  20. Modeling Is a simply a graphical representationof a business process It describes the informationa system must provide. They can describe data,networks and other systerm components

  21. Prototype Tests a System on a smaller scale. You can examine input, output and user interface before making any final decisions

  22. There are different methods Systems Analysts use to develop systems

  23. Overview of Systems Development Methods • Structured Analysis • Systems development life cycle (SDLC) • Predictive approach • Uses a set of process models to describe a system graphically • Waterfall model SDLC…SYSTEM Development Life Cycle

  24. Structured Analysis • The SDLC model usually includes five steps • Systems planning • Systems analysis • Systems design • Systems implementation • Systems support and security Traditional method….relies a great deal on documentation…flexible In later phases changes can be costly…also requirementsare defined early and can change

  25. Will Use Data Flow Diagrams (DFD’S) and Process Descriptions (Will Review Later)

  26. DFD for a Food Ordering System. It contains a process (shape) that represents the system to model, "Food Ordering System". It also shows the participants who will interact with the system, called the external entities. In this example, Supplier, Kitchen, Manager and Customer are the entities who will interact with the system. In between the process and the external entities, there are data flow (connectors) that indicate the existence of information exchange between the entities and the system.

  27. Structured Analysis Uses process models to describe a system graphically

  28. Waterfall Method

  29. Methods • Object-oriented Analysis • Combines data & processes that act on the data into things called objects • Objects representpeople, things and processes, transactions and events

  30. Integrates Easily With Object Oriented programming languages. Code is modular and reusable Easy to maintain and expand New methods can sometimes be more complex especially in very large firms

  31. Information Technology Department Depending on Size Functions can be combined

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