ITEC 2010: Systems Analysis and Design I Instructor: Dr. Luiz Marcio Cysneiros Class site:  http://www.math.yorku.ca/~cysn...
Schedule <ul><li>Text :   “Systems Analysis and Design in a Changing World”  by John Satzinger, Robert Jackson and Stephen...
Marking Scheme <ul><li>Midterm (in class): 40% </li></ul><ul><li>2 Assignments ( 1 st  5%, 2 nd  5%) : 10% </li></ul><ul><...
What is Systems Analysis and Design (SAD)? <ul><li>Systems Analysis:  understanding and specifying in detail  what  an inf...
 
 
 
 
 
 
Course Objectives <ul><li>To provide you with new ways of looking at information in the world in order to solve business p...
Course Topics <ul><li>Introduction to systems analysis and design (Chapter 1) </li></ul><ul><ul><li>the analyst as problem...
Topics (continued) <ul><li>Approaches to Systems Development (chapter 2) </li></ul><ul><ul><li>Methodologies and Models </...
Topics (continued) <ul><li>Identifying System Requirements (Chapter 4) </li></ul><ul><ul><li>stakeholders </li></ul></ul><...
Topics (continued) <ul><li>System Design (Chapters 9,10,11,14 and 15) </li></ul><ul><ul><li>going from requirements to des...
Chapter 1: The World of the Modern System Analyst <ul><li>System Analysis:  the process of understanding and specifying in...
Research and understand the problem Verify that the benefits of solving the  problem outweigh the costs Develop a set of p...
Thinking in terms of “Systems” <ul><li>What is a system? </li></ul><ul><li>A  system  is a collection of interrelated comp...
Characteristics of Systems <ul><li>Systems are made up of  interrelated subsystems  (e.g. a nuclear reactor is composed of...
General Depiction of a System input output boundary interrelationship subsystem output
Overall production system (supersystem) (figure 1-2 in the text)
Figure 1-4: The system boundary and the automation boundary
“ Systems” Thinking <ul><li>Being able to identify something as a system </li></ul><ul><li>Involves being able to identify...
Information Systems and Component Parts Figure 1-3 Systems Analysis and Design in a Changing World, 5th Edition
Types of Information Systems <ul><li>Transaction processing systems (TPS) </li></ul><ul><ul><li>Capture and record informa...
<ul><li>Executive Information Systems (EIS) </li></ul><ul><ul><li>Provide information for executives to use in strategic p...
Required Skills of the Systems Analyst <ul><li>Technical Knowledge and Skills </li></ul><ul><ul><ul><li>Computers and how ...
<ul><li>Business Knowledge and Skills </li></ul><ul><ul><li>What activities and processes do organizations perform? </li><...
<ul><li>People Knowledge and Skills </li></ul><ul><ul><li>Single most important interpersonal skill: </li></ul></ul><ul><u...
Typical Job Titles <ul><li>Programmer/analyst </li></ul><ul><li>Business systems analyst </li></ul><ul><li>System liaison ...
Typical Job Ad:  Systems Analyst – Distribution Center <ul><li>We are the world’s leading manufacturer of women’s apparel ...
Components of an Information Systems Strategic Plan Figure 1-7 Systems Analysis and Design in a Changing World, 5th Edition
Rocky Mountain Outfitters (RMO) and Its Strategic Information Systems Plan <ul><li>RMO sports clothing manufacturer and di...
Introduction to Rocky Mountain Outfitters (RMO) Business <ul><li>Began in Park City, Utah supplying winter sports clothes ...
Early RMO Catalog Cover (Fall 1978) ‏ Figure 1-8
Current RMO Catalog Cover (Fall 2007) ‏ Figure 1-9
RMO Strategic Issues <ul><li>Innovative clothing distributor; featured products on Web site ahead of competitors </li></ul...
RMO Strategic Issues (continued) <ul><li>Enhanced Web site functions </li></ul><ul><ul><li>Add specific product informatio...
RMO’s Organizational Structure <ul><li>Managed by original owners </li></ul><ul><ul><li>John Blankens – President </li></u...
RMO Current Organization Figure 1-10
RMO Locations Figure 1-11 Systems Analysis and Design in a Changing World, 5th Edition
RMO Information Systems Department <ul><li>Mac Preston  –  Assistant vice-president and chief information officer (CIO) ‏ ...
RMO Information Systems Department Staffing Figure 1-12 Systems Analysis and Design in a Changing World, 5th Edition
Existing RMO Systems <ul><li>Small server cluster system  </li></ul><ul><ul><li>Supports inventory, mail-order, accounting...
Existing RMO Systems (continued) ‏ <ul><li>Supply Chain Management System </li></ul><ul><ul><li>Client/Server system in C+...
Existing RMO Systems (continued) ‏ <ul><li>Office systems </li></ul><ul><ul><li>LAN with office software, Internet, e-mail...
The Information Systems Strategic Plan <ul><li>Supports RMO strategic objectives </li></ul><ul><ul><li>Build more direct c...
RMO Technology Architecture Plan <ul><li>Distribute business applications  </li></ul><ul><ul><li>Across multiple locations...
RMO Application Architecture Plan <ul><li>Supply chain management (SCM) ‏ </li></ul><ul><ul><li>Product development, produ...
RMO Application Architecture Plan (continued) ‏ <ul><li>Retail store system (RSS) ‏ </li></ul><ul><ul><li>Replace existing...
Timetable for RMO Strategic Plan Figure 1-13
System Development <ul><li>Project:  a planned undertaking that has a beginning and an end, and which produces a predeterm...
System Development Life Cycle (SDLC) <ul><li>The  systems development life cycle  (SDLC) is a general term used to describ...
Phases in the SDLC <ul><li>Sets of related activities are organized into “phases”: </li></ul><ul><li>Project planning phas...
 
The Planning Phase <ul><li>Define the problem (and its scope) </li></ul><ul><li>Confirm project feasibility </li></ul><ul>...
The Analysis Phase <ul><li>Primary objective: to understand and document the information needs and processing requirements...
Design Phase <ul><li>Objective: to  design  the solution (not to implement it though) </li></ul><ul><li>Activities </li></...
Implementation Phase <ul><li>Information system is built, tested and installed (actual programming of the information syst...
Support Phase <ul><li>Objective is to keep the information system running after its installation </li></ul><ul><li>Activit...
Scheduling of Project Phases <ul><li>Traditional approach:  “Waterfall method” – only when one phase is finished does the ...
Newer Approaches <ul><li>The waterfall approach is less used now </li></ul><ul><li>The activities are still planning, anal...
 
Participants in a System  Development Project  ‏
The Project Team <ul><li>Like a “surgical team” – each member of the team performs a specialized task critical to the whol...
 
Project Management <ul><li>Project Manager  – has primary responsibility for the functioning of the team </li></ul><ul><li...
Tasks of a Project Manager <ul><li>Planning and Organization </li></ul><ul><ul><li>Identify scope of the project </li></ul...
Project Initiation <ul><li>Projects may be initiated as part of the long-term strategic plan (top-down) </li></ul><ul><ul>...
 
The Project Planning Phase <ul><li>Defining the Problem </li></ul><ul><ul><li>Review the business needs and benefits (a br...
 
 
Developing a Project Schedule <ul><li>Identify individual tasks for each activity </li></ul><ul><ul><li>Top-down or bottom...
 
 
PERT Chart <ul><li>Tasks represented by rectangles </li></ul><ul><li>Tasks on parallel paths can be done concurrently </li...
Gantt Chart <ul><li>Tasks represented by vertical bars </li></ul><ul><li>Vertical tick marks are calendar days and weeks <...
 
Further Preparations <ul><li>Staffing the Project </li></ul><ul><ul><li>Develop a resource plan </li></ul></ul><ul><ul><li...
<ul><li>2. Confirming Project Feasibility </li></ul><ul><ul><li>Economic feasibility – cost-benefit analysis </li></ul></u...
<ul><li>Costs </li></ul><ul><ul><li>Development costs  : salaries and wages, equipment and installation, software and lice...
<ul><li>Benefits </li></ul><ul><ul><li>Tangible benefits - examples   </li></ul></ul><ul><ul><ul><li>Reducing staff (due t...
<ul><li>Benefits </li></ul><ul><ul><li>Intangible benefits – examples </li></ul></ul><ul><ul><ul><li>Increased customer sa...
Conducting the feasibility study <ul><li>Each category of cost is estimated </li></ul><ul><li>Salaries and wages are calcu...
 
462,916 29,166 70,000 5 months Network Designer 175,000 50,000 7 months Programmers (6) 168,750 75,000 9 months System Ana...
 
 
 
Some Terminology (see text – Appendix B) <ul><li>Net present value:  The present value of dollar benefits and costs for an...
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We Are The World’S Leading Manufacturer Of Women’S Apparel Products

  1. 1. ITEC 2010: Systems Analysis and Design I Instructor: Dr. Luiz Marcio Cysneiros Class site: http://www.math.yorku.ca/~cysneiro/courses.htm Office: TEL Building 3053 Email: cysneiro@yorku.ca
  2. 2. Schedule <ul><li>Text : “Systems Analysis and Design in a Changing World” by John Satzinger, Robert Jackson and Stephen Burd 3 rd edition </li></ul><ul><li>Office Hours: Wednesday / Thursday 11:00 A.M. to noon </li></ul><ul><li>Phone: 416-736-2100, ext. 33886 Email: cysneiro@yorku.ca </li></ul>
  3. 3. Marking Scheme <ul><li>Midterm (in class): 40% </li></ul><ul><li>2 Assignments ( 1 st 5%, 2 nd 5%) : 10% </li></ul><ul><li>Final: 50% </li></ul><ul><li>Midterm and Final will be closed book </li></ul><ul><li>If a student gets less than 38% in the Final he/she fails the course regardless the average </li></ul><ul><li>Rounding Policy : For example : </li></ul><ul><li>                               49.4 goes to 49 </li></ul><ul><li>                               49.5 or higher goes to 50 </li></ul><ul><li>Lecture notes will be made available at: </li></ul><ul><li>http://www.math.yorku.ca/~cysneiro/courses.html </li></ul>
  4. 4. What is Systems Analysis and Design (SAD)? <ul><li>Systems Analysis: understanding and specifying in detail what an information system should do </li></ul><ul><li>System Design: specifying in detail how the parts of an information system should be implemented </li></ul><ul><li>Why is it important? </li></ul><ul><li>Success of information systems depends on good SAD </li></ul><ul><li>Widely used in industry - proven techniques </li></ul><ul><li>part of career growth in IT - lots of interesting and well-paying jobs! (rated 2nd best job in latest “Jobs Almanac”) </li></ul><ul><li>increasing demand for systems analysis skills </li></ul>
  5. 11. Course Objectives <ul><li>To provide you with new ways of looking at information in the world in order to solve business problems </li></ul><ul><li>To introduce you to concepts and methods of System Analysis and design (SAD) </li></ul><ul><li>To describe the systems development life cycle (SDLC) </li></ul><ul><li>To teach you effective methods for gathering essential information during system analysis </li></ul><ul><li>To teach you effective methods for designing systems to solve problems effectively using technology </li></ul>
  6. 12. Course Topics <ul><li>Introduction to systems analysis and design (Chapter 1) </li></ul><ul><ul><li>the analyst as problem solver </li></ul></ul><ul><ul><li>required skills of systems analysts </li></ul></ul><ul><ul><li>types of jobs and the analyst’s role </li></ul></ul><ul><ul><li>Example: Rocky mountain outfitters </li></ul></ul><ul><li>The analyst as project manager (Chapter 3) </li></ul><ul><ul><li>the systems development life cycle (SDLC) </li></ul></ul><ul><ul><ul><li>planning phase </li></ul></ul></ul><ul><ul><ul><li>analysis phase </li></ul></ul></ul><ul><ul><ul><li>design phase </li></ul></ul></ul><ul><ul><ul><li>implementation phase </li></ul></ul></ul><ul><ul><ul><li>support phase </li></ul></ul></ul><ul><ul><li>the project team </li></ul></ul>
  7. 13. Topics (continued) <ul><li>Approaches to Systems Development (chapter 2) </li></ul><ul><ul><li>Methodologies and Models </li></ul></ul><ul><ul><li>2 approaches: </li></ul></ul><ul><ul><ul><li>structured approach </li></ul></ul></ul><ul><ul><ul><li>object-oriented approach </li></ul></ul></ul><ul><ul><li>Waterfall Models for SDLC </li></ul></ul><ul><ul><li>other variations </li></ul></ul><ul><ul><li>computer-aided software engineering (CASE) </li></ul></ul>
  8. 14. Topics (continued) <ul><li>Identifying System Requirements (Chapter 4) </li></ul><ul><ul><li>stakeholders </li></ul></ul><ul><ul><li>Methods - e.g. questionnaires, interviews, observation, build prototypes, others </li></ul></ul><ul><li>Modelling System Requirements (Chapter 5,6,7 and 8) </li></ul><ul><ul><li>types of models - e.g. mathematical, descriptive, graphical </li></ul></ul><ul><ul><li>identifying and modeling events </li></ul></ul><ul><ul><li>identifying and modeling “things” in the world </li></ul></ul><ul><ul><li>traditional and object-oriented methods </li></ul></ul>
  9. 15. Topics (continued) <ul><li>System Design (Chapters 9,10,11,14 and 15) </li></ul><ul><ul><li>going from requirements to design </li></ul></ul><ul><ul><li>elements of design </li></ul></ul><ul><ul><li>approaches </li></ul></ul><ul><ul><ul><li>structured approach </li></ul></ul></ul><ul><ul><ul><li>object-oriented approach </li></ul></ul></ul><ul><ul><li>design of inputs and outputs </li></ul></ul><ul><ul><li>designing databases </li></ul></ul><ul><ul><li>designing user interfaces </li></ul></ul>
  10. 16. Chapter 1: The World of the Modern System Analyst <ul><li>System Analysis: the process of understanding and specifying in detail what the information system should do </li></ul><ul><li>System Design: the process of specifying in detail how the many component parts of the information system should be implemented </li></ul><ul><li>System Analyst: A professional who used analysis and design techniques to solve business problems (involving information technology) </li></ul><ul><li>A theme of the course: developing effective information systems is much more than just writing computer programs (involves cognitive skills in understanding problems and knowing where computer technology best “fits in”) </li></ul>
  11. 17. Research and understand the problem Verify that the benefits of solving the problem outweigh the costs Develop a set of possible solutions (alternatives) Decide which solution is best, and make a recommendation Design the details of the chosen solution Implement the solution Monitor to make sure the you Obtain the desired results The Analysts’ Approach to Problem Solving (Figure 1-1 in the text)
  12. 18. Thinking in terms of “Systems” <ul><li>What is a system? </li></ul><ul><li>A system is a collection of interrelated components (subsystems) that function together to achieve some outcome (e.g. biological system, computer system, social system) </li></ul><ul><li>An information system is a collection of interrelated components that collect, process, store and provide as output the information needed to complete business tasks (e.g. payroll system) </li></ul>
  13. 19. Characteristics of Systems <ul><li>Systems are made up of interrelated subsystems (e.g. a nuclear reactor is composed of boilers, reactor components etc.) </li></ul><ul><li>Functional decomposition – dividing a system into components based on subsystems (which are in turn further divided into subsystems) </li></ul><ul><li>System boundary – the separation between a system and its environment (where inputs and outputs cross) </li></ul><ul><li>Automation boundary – separation between the automated part of system and the manual part </li></ul>
  14. 20. General Depiction of a System input output boundary interrelationship subsystem output
  15. 21. Overall production system (supersystem) (figure 1-2 in the text)
  16. 22. Figure 1-4: The system boundary and the automation boundary
  17. 23. “ Systems” Thinking <ul><li>Being able to identify something as a system </li></ul><ul><li>Involves being able to identify subsystems </li></ul><ul><li>Identifying system characteristics and functions </li></ul><ul><li>Identifying where the boundaries are (or should be) </li></ul><ul><li>Identifying inputs and outputs to systems </li></ul><ul><li>Identifying relationships among subsystems </li></ul>
  18. 24. Information Systems and Component Parts Figure 1-3 Systems Analysis and Design in a Changing World, 5th Edition
  19. 25. Types of Information Systems <ul><li>Transaction processing systems (TPS) </li></ul><ul><ul><li>Capture and record information about the transactions that affect the organization (e.g. the sale of an item, a withdrawal from an ATM etc.) </li></ul></ul><ul><li>Management Information Systems (MIS) </li></ul><ul><ul><li>Take information captured by the transaction processing system and produce reports management needs for planning and controlling business </li></ul></ul>
  20. 26. <ul><li>Executive Information Systems (EIS) </li></ul><ul><ul><li>Provide information for executives to use in strategic planning (could be from organizational database, or outside sources like stock market reports) </li></ul></ul><ul><li>Decision Support Systems (DSS) </li></ul><ul><ul><li>Support human decision making and allows users to explore the potential impact of available options or decisions (e.g. can ask “what if”) </li></ul></ul><ul><ul><li>Closely related to “expert systems” or “knowledge-based” systems </li></ul></ul>
  21. 27. Required Skills of the Systems Analyst <ul><li>Technical Knowledge and Skills </li></ul><ul><ul><ul><li>Computers and how they work in general </li></ul></ul></ul><ul><ul><ul><li>Programming languages </li></ul></ul></ul><ul><ul><ul><li>Devices that interact with computers </li></ul></ul></ul><ul><ul><ul><li>Communications networks </li></ul></ul></ul><ul><ul><ul><li>Database and database management systems </li></ul></ul></ul><ul><ul><ul><li>Operating systems and utilities </li></ul></ul></ul><ul><ul><li>Tools: software products used to help develop analysis and design specifications and completed system components </li></ul></ul><ul><ul><ul><li>e.g. Microsoft Access, Integrated development environments, computer-supported system engineering (CASE) tools </li></ul></ul></ul>
  22. 28. <ul><li>Business Knowledge and Skills </li></ul><ul><ul><li>What activities and processes do organizations perform? </li></ul></ul><ul><ul><li>How are organizations structured? </li></ul></ul><ul><ul><li>How are organizations managed? </li></ul></ul><ul><ul><li>What type of work (activity) does on in the organization? (e.g. hospital, bank etc.) </li></ul></ul><ul><ul><li>Who are the “actors” doing the activities </li></ul></ul><ul><ul><li>About the organization (e.g. company) the system analyst needs to know: </li></ul></ul><ul><ul><ul><li>What the specific organization does </li></ul></ul></ul><ul><ul><ul><li>What makes it successful </li></ul></ul></ul><ul><ul><ul><li>What its strategies and plans are </li></ul></ul></ul><ul><ul><ul><li>What its tradition (“culture”) and values are </li></ul></ul></ul>
  23. 29. <ul><li>People Knowledge and Skills </li></ul><ul><ul><li>Single most important interpersonal skill: </li></ul></ul><ul><ul><ul><li>To communicate clearly and effectively with others! </li></ul></ul></ul><ul><ul><li>Since analysts work on teams with others (e.g. team members, clients etc.) must understand about people: </li></ul></ul><ul><ul><ul><li>How people think </li></ul></ul></ul><ul><ul><ul><li>How people learn </li></ul></ul></ul><ul><ul><ul><li>How people react to change </li></ul></ul></ul><ul><ul><ul><li>How people communicate </li></ul></ul></ul><ul><ul><ul><li>How people work (“activities” and “actors”) </li></ul></ul></ul><ul><ul><li>Other areas: </li></ul></ul><ul><ul><ul><li>Skill in interviewing, listening and observing </li></ul></ul></ul><ul><ul><ul><li>Good written and oral presentation </li></ul></ul></ul><ul><ul><ul><li>Being able to work in a team </li></ul></ul></ul>
  24. 30. Typical Job Titles <ul><li>Programmer/analyst </li></ul><ul><li>Business systems analyst </li></ul><ul><li>System liaison </li></ul><ul><li>End-user analyst </li></ul><ul><li>Business consultant </li></ul><ul><li>Systems consultant </li></ul><ul><li>System support analyst </li></ul><ul><li>System designer </li></ul><ul><li>Software engineer </li></ul><ul><li>System architect </li></ul>
  25. 31. Typical Job Ad: Systems Analyst – Distribution Center <ul><li>We are the world’s leading manufacturer of women’s apparel products. Our organization in the Far East has openings for a Systems Analyst </li></ul><ul><li>Requirements: </li></ul><ul><li>Bachelor’s degree in Computer Science, Business Administration or closely related field with 5 (+) years of working experience </li></ul><ul><li>In-depth understanding of Distribution and Manufacturing concepts (Allocation, Replenishment, Floor Control, Production Scheduling) </li></ul><ul><li>Working knowledge of project management and all phases of the software development life cycle </li></ul><ul><li>Experience with CASE tools, PC and Bar Code equipment </li></ul><ul><li>Working knowledge of AS/400 and/or UNIX environment with the languages C, RPG400 and/or COBOL are desirable </li></ul>
  26. 32. Components of an Information Systems Strategic Plan Figure 1-7 Systems Analysis and Design in a Changing World, 5th Edition
  27. 33. Rocky Mountain Outfitters (RMO) and Its Strategic Information Systems Plan <ul><li>RMO sports clothing manufacturer and distributor about to begin customer support system project </li></ul><ul><li>Need to understand the nature of the business, approach to strategic planning, and objectives for customer support system </li></ul><ul><li>RMO system development project used to demonstrate analysis and design concepts </li></ul><ul><li>Reliable Pharmaceutical Service (RPS) is a second case study for classroom purposes </li></ul>
  28. 34. Introduction to Rocky Mountain Outfitters (RMO) Business <ul><li>Began in Park City, Utah supplying winter sports clothes to local ski shops </li></ul><ul><li>Expanded into direct mail-order sales with small catalog — as catalog interest increased, opened retail store in Park City </li></ul><ul><li>Became large, regional sports clothing distributor by early 2000s in Rocky Mountain and Western states </li></ul><ul><li>Currently $180 million in annual sales and 600 employees and two retail stores </li></ul><ul><li>Mail-order revenue is $90 million; phone-order revenue is $50 million </li></ul>
  29. 35. Early RMO Catalog Cover (Fall 1978) ‏ Figure 1-8
  30. 36. Current RMO Catalog Cover (Fall 2007) ‏ Figure 1-9
  31. 37. RMO Strategic Issues <ul><li>Innovative clothing distributor; featured products on Web site ahead of competitors </li></ul><ul><li>Original Web site now underperforming </li></ul><ul><ul><li>Slow, poor coordination with in-house, poor supply chain management, poor technical support </li></ul></ul><ul><li>Market analysis showed alarming trends </li></ul><ul><ul><li>Sales growth too slow, age of customers increasing, Web sales small percentage of total </li></ul></ul>
  32. 38. RMO Strategic Issues (continued) <ul><li>Enhanced Web site functions </li></ul><ul><ul><li>Add specific product information, weekly specials, and all product offerings </li></ul></ul><ul><li>Detailed IS strategic plan </li></ul><ul><ul><li>Supply chain management </li></ul></ul><ul><ul><li>Customer relationship management </li></ul></ul>
  33. 39. RMO’s Organizational Structure <ul><li>Managed by original owners </li></ul><ul><ul><li>John Blankens – President </li></ul></ul><ul><ul><li>Liz Blankens – Vice president of merchandising and distribution </li></ul></ul><ul><li>William McDougal – Vice president of marketing and sales </li></ul><ul><li>JoAnn White – Vice president of finance and systems </li></ul><ul><ul><li>Mac Preston – Chief Information Officer </li></ul></ul>
  34. 40. RMO Current Organization Figure 1-10
  35. 41. RMO Locations Figure 1-11 Systems Analysis and Design in a Changing World, 5th Edition
  36. 42. RMO Information Systems Department <ul><li>Mac Preston – Assistant vice-president and chief information officer (CIO) ‏ </li></ul><ul><ul><li>Recent promotion made after IS strategic plan created </li></ul></ul><ul><ul><li>CIO reports to finance and systems VP </li></ul></ul><ul><ul><li>CIO is increasingly important to future of RMO </li></ul></ul><ul><ul><li>Given its strategic importance, IS department will eventual report directly to the CEO </li></ul></ul>Systems Analysis and Design in a Changing World, 5th Edition
  37. 43. RMO Information Systems Department Staffing Figure 1-12 Systems Analysis and Design in a Changing World, 5th Edition
  38. 44. Existing RMO Systems <ul><li>Small server cluster system </li></ul><ul><ul><li>Supports inventory, mail-order, accounting, and human resources </li></ul></ul><ul><ul><li>High capacity network connects distribution and mail-order sites </li></ul></ul><ul><li>LANs and file servers </li></ul><ul><ul><li>Supports central office functions, distribution centers, and manufacturing centers </li></ul></ul>Systems Analysis and Design in a Changing World, 5th Edition
  39. 45. Existing RMO Systems (continued) ‏ <ul><li>Supply Chain Management System </li></ul><ul><ul><li>Client/Server system in C++ and DB2 ‏ </li></ul></ul><ul><li>Mail Order System </li></ul><ul><ul><li>Mainframe COBOL/CICS. Unable to handle phone orders </li></ul></ul><ul><li>Phone order system </li></ul><ul><ul><li>Oracle and Visual Basic system built 6 years ago </li></ul></ul><ul><li>Retail store systems </li></ul><ul><ul><li>Eight-year-old point-of-sale and batch inventory package, overnight update with mainframe </li></ul></ul>Systems Analysis and Design in a Changing World, 5th Edition
  40. 46. Existing RMO Systems (continued) ‏ <ul><li>Office systems </li></ul><ul><ul><li>LAN with office software, Internet, e-mail </li></ul></ul><ul><li>Human resources system </li></ul><ul><ul><li>Thirteen-year-old mainframe-based payroll and benefits </li></ul></ul><ul><li>Accounting/finance system </li></ul><ul><ul><li>Mainframe package bought from leading vendor </li></ul></ul><ul><li>Web Catalog and Order System </li></ul><ul><ul><li>Outside company until 2011. Irregular performance </li></ul></ul>
  41. 47. The Information Systems Strategic Plan <ul><li>Supports RMO strategic objectives </li></ul><ul><ul><li>Build more direct customer relationships </li></ul></ul><ul><ul><li>Expand marketing beyond Western states </li></ul></ul><ul><li>Plan calls for a series of information system development and integration projects over several years </li></ul><ul><li>Project launch: New customer support system to integrate phone orders, mail orders, and direct customer orders via Internet </li></ul>
  42. 48. RMO Technology Architecture Plan <ul><li>Distribute business applications </li></ul><ul><ul><li>Across multiple locations and systems </li></ul></ul><ul><ul><li>Reserve data center for Web server, database, and telecommunications </li></ul></ul><ul><li>Strategic business processes via Internet </li></ul><ul><ul><li>Supply chain management (SCM) ‏ </li></ul></ul><ul><ul><li>Direct customer ordering via dynamic Web site </li></ul></ul><ul><ul><li>Customer relationship management (CRM) ‏ </li></ul></ul><ul><li>Web-based intranet for business functions </li></ul>
  43. 49. RMO Application Architecture Plan <ul><li>Supply chain management (SCM) ‏ </li></ul><ul><ul><li>Product development, product acquisition, manufacturing, inventory management </li></ul></ul><ul><li>Customer support system (CSS) ‏ </li></ul><ul><ul><li>Integrate order-processing and fulfillment system with SCM </li></ul></ul><ul><ul><li>Support customer orders (mail, phone, Web) ‏ </li></ul></ul><ul><li>Strategic information management system </li></ul><ul><ul><li>Extract and analyze SCM and CSS information for strategic and operational decision making and control </li></ul></ul>
  44. 50. RMO Application Architecture Plan (continued) ‏ <ul><li>Retail store system (RSS) ‏ </li></ul><ul><ul><li>Replace existing retail store system with system integrated with CSS </li></ul></ul><ul><li>Accounting/finance system </li></ul><ul><ul><li>Purchase intranet application to maximize employee access to financial data for planning and control </li></ul></ul><ul><li>Human resources (HR) system </li></ul><ul><ul><li>Purchase intranet application to maximize employee access to human resources forms, procedures, and benefits information </li></ul></ul>
  45. 51. Timetable for RMO Strategic Plan Figure 1-13
  46. 52. System Development <ul><li>Project: a planned undertaking that has a beginning and an end, and which produces a predetermined result or product </li></ul><ul><li>Information System development project: planned undertaking that produces a system </li></ul><ul><li>Basic activities in development of any new system: </li></ul><ul><ul><li>Analysis – to understand information needs </li></ul></ul><ul><ul><li>Design – define the system architecture (based on needs) </li></ul></ul><ul><ul><li>Implementation – the actual construction of the system </li></ul></ul>
  47. 53. System Development Life Cycle (SDLC) <ul><li>The systems development life cycle (SDLC) is a general term used to describe the method and process of developing a new information system </li></ul><ul><li>Without the structure and organization provided by SDLC approach projects are at risk for missed deadline, low quality etc. </li></ul><ul><li>SDLC provides </li></ul><ul><ul><li>Structure </li></ul></ul><ul><ul><li>Methods </li></ul></ul><ul><ul><li>Controls </li></ul></ul><ul><ul><li>Checklist </li></ul></ul><ul><ul><li>Needed for successful development </li></ul></ul>
  48. 54. Phases in the SDLC <ul><li>Sets of related activities are organized into “phases”: </li></ul><ul><li>Project planning phase </li></ul><ul><li>Analysis phase </li></ul><ul><li>Design phase </li></ul><ul><li>Implementation phase </li></ul><ul><li>Support phase </li></ul><ul><li>In “classical” life cycle these phases are sequential, but there are variations as we will see </li></ul>
  49. 56. The Planning Phase <ul><li>Define the problem (and its scope) </li></ul><ul><li>Confirm project feasibility </li></ul><ul><li>Produce the project schedule </li></ul><ul><li>Staff the project </li></ul><ul><li>Launch the project </li></ul><ul><li>After defining the scope and conducting feasibility study </li></ul><ul><li>the plan is reviewed and if it meets with approval, the project is launched </li></ul>
  50. 57. The Analysis Phase <ul><li>Primary objective: to understand and document the information needs and processing requirements of the new system </li></ul><ul><ul><li>Gather information (e.g. interview, read, observe etc.) </li></ul></ul><ul><ul><li>Define system requirements (reports, diagrams etc.) </li></ul></ul><ul><ul><li>Build prototypes for discovery of requirements </li></ul></ul><ul><ul><li>Prioritize requirements </li></ul></ul><ul><ul><li>Generate and evaluate alternative solutions </li></ul></ul><ul><ul><li>Review recommendations with management </li></ul></ul>
  51. 58. Design Phase <ul><li>Objective: to design the solution (not to implement it though) </li></ul><ul><li>Activities </li></ul><ul><ul><li>Design and integrate the network </li></ul></ul><ul><ul><li>Design the application network </li></ul></ul><ul><ul><li>Design the user interfaces </li></ul></ul><ul><ul><li>Design the system interfaces </li></ul></ul><ul><ul><li>Design and integrate the database </li></ul></ul><ul><ul><li>Prototype for design details </li></ul></ul><ul><ul><li>Design and integrate the system controls </li></ul></ul>
  52. 59. Implementation Phase <ul><li>Information system is built, tested and installed (actual programming of the information system) </li></ul><ul><li>Activities </li></ul><ul><ul><li>Construct software components </li></ul></ul><ul><ul><li>Verify and test </li></ul></ul><ul><ul><li>Develop prototypes for tuning </li></ul></ul><ul><ul><li>Convert data </li></ul></ul><ul><ul><li>Train and document </li></ul></ul><ul><ul><li>Install the system </li></ul></ul>
  53. 60. Support Phase <ul><li>Objective is to keep the information system running after its installation </li></ul><ul><li>Activities </li></ul><ul><ul><li>Provide support to end users </li></ul></ul><ul><ul><ul><li>Help desks </li></ul></ul></ul><ul><ul><ul><li>Training programs </li></ul></ul></ul><ul><ul><li>Maintain and enhance the computer system </li></ul></ul><ul><ul><ul><li>Simple program error correction </li></ul></ul></ul><ul><ul><ul><li>Comprehensive enhancements </li></ul></ul></ul><ul><ul><ul><li>upgrades </li></ul></ul></ul>
  54. 61. Scheduling of Project Phases <ul><li>Traditional approach: “Waterfall method” – only when one phase is finished does the project team drop down (fall) to the next phase </li></ul><ul><ul><li>Fairly rigid approach </li></ul></ul><ul><ul><li>Can’t easily go back to previous phases (each phase would get “signed off”) </li></ul></ul><ul><ul><li>Good for traditional type of projects, e.g. payroll system or system with clearly definable requirements </li></ul></ul><ul><ul><li>Not as good for many of the new types of interactive and highly complex applications </li></ul></ul>
  55. 62. Newer Approaches <ul><li>The waterfall approach is less used now </li></ul><ul><li>The activities are still planning, analysis, design and implementation </li></ul><ul><li>However, many activities are done now in an overlapping or concurrent manner </li></ul><ul><li>Done for efficiency – when activities are not dependent on the outcome of others they can also be carried out (but dependency limits overlap) </li></ul>
  56. 64. Participants in a System Development Project ‏
  57. 65. The Project Team <ul><li>Like a “surgical team” – each member of the team performs a specialized task critical to the whole </li></ul><ul><li>Project team varies over duration of the project (as does project leadership) </li></ul><ul><ul><li>During planning team consists of only a few members (e.g. project manager and a couple of analysts) </li></ul></ul><ul><ul><li>During analysis phase the team adds systems analysts, business analysts </li></ul></ul><ul><ul><li>During design other experts may come in with technical expertise (e.g. database or network design) </li></ul></ul><ul><ul><li>During implementation, programmers and quality control people are added </li></ul></ul>
  58. 67. Project Management <ul><li>Project Manager – has primary responsibility for the functioning of the team </li></ul><ul><li>Project Management – organizing and directing of other people to achieve a planned result within a predetermined schedule and budget </li></ul><ul><li>Good manager: </li></ul><ul><ul><li>Knows how to plan, execute the plan, anticipate problems and adjust for variances </li></ul></ul><ul><li>Client – person or group who funds the project </li></ul><ul><li>Oversight committee – reviews and direct the project </li></ul><ul><li>User – the person or group who will use the system </li></ul>
  59. 68. Tasks of a Project Manager <ul><li>Planning and Organization </li></ul><ul><ul><li>Identify scope of the project </li></ul></ul><ul><ul><li>Develop a plan, with detailed task list and schedule </li></ul></ul><ul><li>Directing </li></ul><ul><ul><li>Responsible for directing the execution of the project </li></ul></ul><ul><ul><li>Responsible for monitoring the project - make sure that milestones (key events in a project) are met </li></ul></ul><ul><ul><li>Overall control of the project </li></ul></ul><ul><ul><ul><li>Plan and organize project </li></ul></ul></ul><ul><ul><ul><li>Define milestones and deliverables </li></ul></ul></ul><ul><ul><ul><li>Monitor progress </li></ul></ul></ul><ul><ul><ul><li>Allocate resources and determine roles </li></ul></ul></ul><ul><ul><ul><li>Define methodologies </li></ul></ul></ul><ul><ul><ul><li>Anticipate problems and manage staff </li></ul></ul></ul>
  60. 69. Project Initiation <ul><li>Projects may be initiated as part of the long-term strategic plan (top-down) </li></ul><ul><ul><li>based on mission or objective statement come up with some competitive business strategy- usually involves IT) </li></ul></ul><ul><ul><li>E.G. Rocky Mountain Outfitters example – to be more competitive wants to improve customer support – so moves towards Internet based re-development of systems </li></ul></ul><ul><li>Projects may proceed bottom up </li></ul><ul><ul><li>To fill some immediate need that comes up </li></ul></ul><ul><li>Projects may also be initiated due to some outside force </li></ul><ul><ul><li>E.g. change in tax structure may affect billing system </li></ul></ul>
  61. 71. The Project Planning Phase <ul><li>Defining the Problem </li></ul><ul><ul><li>Review the business needs and benefits (a brief paragraph) </li></ul></ul><ul><ul><li>Identify the expected capabilities of the new system (define the scope of the project) </li></ul></ul><ul><ul><li>May involve developing a context diagram to explain the scope of the project </li></ul></ul>
  62. 74. Developing a Project Schedule <ul><li>Identify individual tasks for each activity </li></ul><ul><ul><li>Top-down or bottom-up approach </li></ul></ul><ul><li>Estimate the size of each task (time and resources) – optimistic, pessimistic and expected times </li></ul><ul><li>Determine the sequence for the tasks </li></ul><ul><li>Schedule the tasks </li></ul><ul><li>Charting methods (Appendix C) </li></ul><ul><ul><li>PERT/CPM ( P roject E valuation and R eview T echnique/ C ritical P ath M ethod) chart shows the relationships based on tasks or activities </li></ul></ul><ul><ul><ul><li>Defines tasks that can be done concurrently or not and critical path </li></ul></ul></ul><ul><ul><li>Gantt chart shows calendar information for each task as a bar chart </li></ul></ul><ul><ul><ul><li>Shows schedules well but not dependencies as well </li></ul></ul></ul>
  63. 77. PERT Chart <ul><li>Tasks represented by rectangles </li></ul><ul><li>Tasks on parallel paths can be done concurrently </li></ul><ul><li>Critical path – longest path of dependent tasks </li></ul><ul><ul><li>No allowable slack time on this path </li></ul></ul><ul><ul><li>Other paths can have slack time (time that can slip without affecting the schedule) </li></ul></ul>
  64. 78. Gantt Chart <ul><li>Tasks represented by vertical bars </li></ul><ul><li>Vertical tick marks are calendar days and weeks </li></ul><ul><li>Shows calendar information in a way that is easy </li></ul><ul><li>Bars may be colored or darkened to show completed tasks </li></ul><ul><li>Vertical line indicates today’s date </li></ul>
  65. 80. Further Preparations <ul><li>Staffing the Project </li></ul><ul><ul><li>Develop a resource plan </li></ul></ul><ul><ul><li>Identify and request technical staff </li></ul></ul><ul><ul><li>Identify and request specific user staff </li></ul></ul><ul><ul><li>Organize the project team into work groups </li></ul></ul><ul><ul><li>Conduct preliminary training and team-building </li></ul></ul>
  66. 81. <ul><li>2. Confirming Project Feasibility </li></ul><ul><ul><li>Economic feasibility – cost-benefit analysis </li></ul></ul><ul><ul><li>Organizational and cultural feasibility </li></ul></ul><ul><ul><ul><li>E.g. low level of computer literacy, fear of employment loss </li></ul></ul></ul><ul><ul><li>Technological feasibility </li></ul></ul><ul><ul><ul><li>Proposed technological requirements and available expertise </li></ul></ul></ul><ul><ul><li>Schedule feasibility </li></ul></ul><ul><ul><ul><li>How well can do in fixed time or deadline (e.g. Y2K projects) </li></ul></ul></ul><ul><ul><li>Resource feasibility </li></ul></ul><ul><ul><ul><li>Availability of team, computer resources, support staff </li></ul></ul></ul><ul><li>Economic Feasibility </li></ul><ul><ul><li>The analysis to compare costs and benefits to see whether the investment in the development of the system will be more beneficial than than costly </li></ul></ul>
  67. 82. <ul><li>Costs </li></ul><ul><ul><li>Development costs : salaries and wages, equipment and installation, software and licenses, consulting fees and payments to third parties, training, facilities, utilities and tools, support staff, travel and miscellaneous </li></ul></ul><ul><ul><li>Sources of Ongoing Costs of Operations: connectivity, equipment maintenance, computer operations, programming support, amortization of equipment, training and ongoing assistance (help desk), supplies </li></ul></ul>
  68. 83. <ul><li>Benefits </li></ul><ul><ul><li>Tangible benefits - examples </li></ul></ul><ul><ul><ul><li>Reducing staff (due to automation) </li></ul></ul></ul><ul><ul><ul><li>Maintaining constant staff </li></ul></ul></ul><ul><ul><ul><li>Decreasing operating expenses </li></ul></ul></ul><ul><ul><ul><li>Reducing error rates (due to automation) </li></ul></ul></ul><ul><ul><ul><li>Ensuring quicker processing and turnabout </li></ul></ul></ul><ul><ul><ul><li>Capturing lost discounts </li></ul></ul></ul><ul><ul><ul><li>Reducing bad accounts or bad credit losses </li></ul></ul></ul><ul><ul><ul><li>Reducing inventory or merchandise loss </li></ul></ul></ul><ul><ul><ul><li>Collecting accounts receivable more quickly </li></ul></ul></ul><ul><ul><ul><li>Capturing income lost due to “stock outs” </li></ul></ul></ul><ul><ul><ul><li>Reducing the cost of goods with volume discounts </li></ul></ul></ul><ul><ul><ul><li>Reducing paperwork costs </li></ul></ul></ul>
  69. 84. <ul><li>Benefits </li></ul><ul><ul><li>Intangible benefits – examples </li></ul></ul><ul><ul><ul><li>Increased customer satisfaction </li></ul></ul></ul><ul><ul><ul><li>Survival </li></ul></ul></ul><ul><ul><ul><li>Safety of a Patient </li></ul></ul></ul><ul><ul><ul><li>The need to develop in-house expertise </li></ul></ul></ul><ul><ul><li>Note - also can have intangible costs for a project </li></ul></ul><ul><ul><ul><li>reduced employee moral </li></ul></ul></ul><ul><ul><ul><li>lost productivity </li></ul></ul></ul><ul><ul><ul><li>lost customer or sales </li></ul></ul></ul>
  70. 85. Conducting the feasibility study <ul><li>Each category of cost is estimated </li></ul><ul><li>Salaries and wages are calculated based on staffing requirements </li></ul><ul><li>Other costs such as equipment, software licenses, training are also estimated </li></ul><ul><li>A summary of development costs and annual operating costs is created </li></ul><ul><li>A summary of benefits is created </li></ul><ul><li>Net present value (NPV) – present value of benefits and costs, is calculated for e.g. 5 year period </li></ul><ul><li>Decision is made to proceed with project or not </li></ul>
  71. 87. 462,916 29,166 70,000 5 months Network Designer 175,000 50,000 7 months Programmers (6) 168,750 75,000 9 months System Analyst (3) 90,000 90,000 12 months Project Manager Total Salary Time Job
  72. 91. Some Terminology (see text – Appendix B) <ul><li>Net present value: The present value of dollar benefits and costs for an investment such as a new system </li></ul><ul><ul><li>since $100 received one year in the future is worth only $94.34, using a discount rate of .06, the discount rate is used the calculation of Net present value (which equates future values to current values) </li></ul></ul><ul><li>Payback period, or breakeven point: The time period at which the dollar benefits offset the dollar costs </li></ul><ul><li>Return on Investment (ROI): a measure of the percentage gain received from an investment such as a new system </li></ul><ul><li>ROI=(estimated time period Benefits – estimated time period costs) / </li></ul><ul><li>estimated time period costs </li></ul><ul><li>Tangible benefits: Benefits that can be measured or estimated in terms of dollars and that accrue </li></ul><ul><li>Intangible benefits: Benefits that accrue but that cannot be measured quantitatively or estimated accurately </li></ul>
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