Essentials of Systems Analysis and Design
Course Name: Essentials of Systems Analysis and Design (1)
Course number: 507322
Instructor: Dr. Enas Al-lozi
Chapter 1: The Systems Development Environment
Summary
▪ What is the key to success for any organization?
The ability to gather, organize and interpret information through systems analysis and design.
▪ What is systems analysis and design?
It is a method of creating and developing information systems that perform basic functions.
▪ Why the need to develop new Information systems?
1. To solve current problems within the organization.
2. To replace traditional information systems that is not capable of solving current problems.
3. To upgrade the efficiency of existing information systems in order to deal with the turbulent environment.
▪ What is a system?
It is a set of interrelated components that are working together to achieve a certain purpose.
▪ What are the characteristics of a system?
1. Components: The parts or sub-systems that make a system.
2. Interrelated components (relationships between the sub-systems): every sub-system is dependent on the other.
3. Boundary: the line that separates the system from the outside (external environment).
4. Purpose: all components work together to achieve a purpose (the reason of existing).
5. Environment: everything external.
6. Interface: point of contact between the system and the external environment.
7. Input.
8. Output.
9. Constraints: Limitations of what a system can do.
▪ What do we mean by decomposition?
Before developing an information system, you need to understand the components of the system to be developed. It is the process of breaking down the system into sub-components to:
1. Easily manage and understand.
2. Focus on one part at a time.
3. Understand what users exactly need.
4. Build each sub-system one at a time.
▪ What
Course number: 507322
Instructor: Dr. Enas Al-lozi
Chapter 1: The Systems Development Environment
Summary
▪ What is the key to success for any organization?
The ability to gather, organize and interpret information through systems analysis and design.
▪ What is systems analysis and design?
It is a method of creating and developing information systems that perform basic functions.
▪ Why the need to develop new Information systems?
1. To solve current problems within the organization.
2. To replace traditional information systems that is not capable of solving current problems.
3. To upgrade the efficiency of existing information systems in order to deal with the turbulent environment.
▪ What is a system?
It is a set of interrelated components that are working together to achieve a certain purpose.
▪ What are the characteristics of a system?
1. Components: The parts or sub-systems that make a system.
2. Interrelated components (relationships between the sub-systems): every sub-system is dependent on the other.
3. Boundary: the line that separates the system from the outside (external environment).
4. Purpose: all components work together to achieve a purpose (the reason of existing).
5. Environment: everything external.
6. Interface: point of contact between the system and the external environment.
7. Input.
8. Output.
9. Constraints: Limitations of what a system can do.
▪ What do we mean by decomposition?
Before developing an information system, you need to understand the components of the system to be developed. It is the process of breaking down the system into sub-components to:
1. Easily manage and understand.
2. Focus on one part at a time.
3. Understand what users exactly need.
4. Build each sub-system one at a time.
▪ What