1. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition Review Materi Final Semester

2. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition Designing Accurate Data-Entry Procedures MAJOR TOPIK Data entry Effective coding Types of codes Guidelines for coding Validation methods Check digits Ecommerce accuracy

3. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition Quality Data-Entry Objectives The quality of data input determines the quality of information output Accurate data entry is achieved through four broad objectives: Effective coding Effective data capture Efficient data capture and entry Assuring quality through validation

4. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition Guidelines for Coding Guidelines for coding Keep codes concise Keep codes stable Make codes that are unique Allow codes to be sortable Avoid confusing codes Keep codes uniform Allow for modification of codes Make codes meaningful

5. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition Guidelines for Effective Data Capture Guidelines for effective and efficient data capture Deciding what to capture Letting the computer do the rest Avoiding bottlenecks and extra steps Starting with a good form Choosing a data-entry method

6. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition SYSTEMSCONSTRUCTION AND IMPLEMENTATION Explain the purpose of the construction and implementation phases of the systems life cycle. Describe the systems construction and implementation phases in terms of your information building blocks. Describe the systems construction implementation phases in terms of major tasks, roles, inputs and outputs. Explain several application program and system tests. Identify several system conversion strategies. Identify those chapters in this textbook that can help you actually perform the tasks of systems construction and implementation.

7. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition Major Topics Quality Assurance Through Software Engineering Quality assurance Walkthroughs Structure charts Modules Data and control passing Documentation Testing

8. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition Quality Assurance Three quality assurance approaches through software engineering have been developed to evaluate the quality of the information system's design and analysis

9. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition Guidelines for Quality Software Quality assurance approaches are Securing total quality assurance through designing systems and software with a top-down and modular approach Documenting software with appropriate tools Testing, maintaining, and auditing software

10. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition Testing Overview The new or modified application programs, procedural manuals, new hardware, and all system interfaces must be tested thoroughly

11. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition Testing Procedures The following testing process is recommended: Program testing with test data Link testing with test data Full system testing with test data Full system testing with live data

12. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition Maintenance Maintenance is due to Errors or flaws in the system Enhancing the system Feedback procedures must be in place to communicate suggestions

13. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition Systems construction is the development, installation, and testing of system components. Systems implementation is the delivery of that system into production (meaning day-to-day operation). What Is System Construction and Implementation?

14. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition Tasks for Completing The Construction Phase Build and Test Networks Build and Test Databases Install and Test New Software Package Write and Test New Programs

15. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition SYSTEMS OPERATION AND SUPPORT Define systems operations and support. Describe the relative roles of a repository, program library, and database in systems operations and support. Differentiate between maintenance, recovery, technical support, and enhancement as system support activities. Describe the tasks required to maintain programs in response to bugs. Describe the role of benchmarking in system maintenance. Describe the systems analyst’s role in system recovery. Describe forms of technical support that a systems analyst provides for the user community. Describe the tasks that should be and may be performed in system enhancement, and the relationship between the enhancement and original systems development process. Describe the role of reengineering in systems enhancement. Describe three types of reengineering.

16. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition Support versus Operation An operational system is frequently called a production system. Systems support is the on-going technical support for users, as well as the maintenance required to fix any errors, omissions, or new requirements that may arise. Systems operation is the day-to- day, week-to-week, month-to- month, and year-to-year execution of an information system’s business processes and application programs.

17. Irwin/McGraw-Hill Copyright © 2000 The McGraw-Hill Companies. All Rights reserved Whitten Bentley DittmanSYSTEMS ANALYSIS AND DESIGN METHODS5th Edition System Support Activities Program maintenance corrects “bugs” or errors that slipped through the system development process. System recovery is the restoration of the system and data after a system failure. Technical support is any assistance provided to users in response to inexperience or unanticipated situations. System enhancement is the improvement of the system to handle new business problems, new technical problems, or new technology requirements.