Systems Analysis and Design I” Course Introduction

1. Systems Analysis and Design I”Course Introduction Ahmed Eltayeb

2. Contact Information DR. AHMED ELTAYEBPhone: 0912216235 Email. Ahmed_tabat@hotmail.com Ahmed Eltayeb

3. Course Objectives • To provide you with new ways of looking at information in order to solve business problems • To introduce you to concepts and methods of SAD • To describe the systems development life cycle (SDLC) • To teach you effective methods for gathering essential information during system analysis • To teach you approaches to documenting and modeling of gathered information Ahmed Eltayeb

4. Course Objectives • To teach you effective methods for designing systems to solve problems effectively using technology Ahmed Eltayeb

5. Topics covered • System’s concept • The system development environment • Types of information systems • Life cycle of the system • Analysis system • Methods of analysis (down to top- top to down- Entities) • Analysis Tools • Determining systems requirements Ahmed Eltayeb

6. Topics covered • Analysis processes • security • documentation • Elements of systems design • Designing the user interface • Programming • Implementations Ahmed Eltayeb

7. What is Systems Analysis and Design (SAD)? • Systems Analysis: understanding and specifying in detail what an information system should do • System Design: specifying in detail how the parts of an information system should be implemented Why is it important? • Success of information systems depends on good SAD • Widely used in industry - proven techniques Ahmed Eltayeb

8. What is Systems Analysis and Design (SAD)? • Part of career growth in IT - lots of interesting and well-paying jobs! • Increasing demand for systems analysis skills Ahmed Eltayeb

9. SYSTM THEORY: Systems theory means identifying the following elements, and find a physical or logical relationship between them( following elements) : - A - system and its components. B - system environment. C - users of the system.  D - the life cycle of the system. • System’s Concepts Ahmed Eltayeb

10. System’s Concepts the system: Is a set of units that working together to achieve specific objectives and each unit it itself a stand-alone system. Information :Is data that have been processed for use in decision support or increased knowledge. processing : Mean , collection , storage, retrieval, sort, classify, search, encryption, (mathematical calculations and computing), organize, view, send, receive, update, delete, maintenance, coding data ... etc.. Ahmed Eltayeb

11. System’s Concepts Examples: Processing and storage is the basic beginning and need , then represents the lowest retrieval tool for decision support and computation calculations (addition and subtraction) represent a second phase to support the resolution. Ahmed Eltayeb

12. System’s Concepts Information System:Is a system that processes the data to support the decision or increase knowledge. Computerized information system:Is an information system which uses the computer system in whole or in part. Computer system:Is the electronic units are to assist in data processing. Ahmed Eltayeb

13. System’s Concepts Ahmed Eltayeb

14. System’s Concepts Units or subsystemsIs a set of Units of individuals, users, programmers, technicians, decision makers, input devices, output and storage, and processing units, control units and transmitters and receivers, and units collecting and processing data, and units of software use, the units lock use and maintenance of operating working together to process the data for decision support directly or indirectly. Ahmed Eltayeb

15. System’s Concepts System's components: system as mentioned in the definition is a set of interrelated units or organizations, which was composed together to form an integral whole and to work as one unit. • Then the system consists of a set units gathered together by ( logical or physical) relationship to work together as a unit and these units can be considered as subsystems Consists of smaller units including , and so on - may be that the system is subsystem of the largest and most comprehensive system ....... . And so on. • This can be described as follows: - Ahmed Eltayeb

16. System’s Concepts • SUBSYSTEM SYSTEM SUPER SYSTEM Any information system must consist of three basic units are:A – Inputs units .B - processing units .T – Output units . input process output Ahmed Eltayeb

17. System’s Concepts • These units are the basis for the design of any information system For example: Registration system in the College students from the faculties of the University: - Input: All data required for the purpose of the student registry like( Name - Date of Birth - class ..... etc.. )Any baseline data suitable for the student to complete registration procedures. Ahmed Eltayeb

18. System’s Concepts processing :create a file with records - for this student can be counted among a group of records of students enrolled and copy some of them for the purpose of this follow-up of the student.Output : A set of statements issued by the registration desk to continue. The objective of this system is to adjust the student's follow-up in the coming stages. Ahmed Eltayeb

19. Thanks Ahmed Eltayeb