System Analysis and Design
1. 1. Define the term system architecture. Define the term scalability, and explain why it is important to consider scalability in system design. *
System Architecture
Determine processing strategies and methods, client/server interaction, network configuration, and Internet/intranet interface issues. translates the logical design of an information system into a physical structure that includes hardware, software, network support, processing methods, and security.
Escalability - also called extensibility, refers to a system’s ability to expand,change, or downsize easily to meet the changing needs of a business enterprise. Scalability is especially important in implementing systems that are volume-related, such as transaction processing systems. A scalable system is necessary to support a dynamic, growing business. For example, a scalable network couldhandle anywhere from a few dozen nodes to thousands of nodes; a scalable DBMS could support the acquisition of a new sales division. When investing large amounts of money in a project, management is especially concerned about scalability issues that could affect the system’s life expectancy.
2. When selecting an architecture, what items should a systems analyst consider as part of the overall design checklist? *
SYSTEM ARCHITECTURE CHECKLIST
Just as an architect begins a project with a list of the owner’s requirements, a systems analyst must approach system architecture with an overall checklist. Before making a decision, the analyst must consider seven specific issues that will affect the architecture choice:
• Enterprise resource planning (ERP)
• Initial and total cost of ownership (TCO)
• Scalability
• Web integration
• Legacy system interface requirements
• Processing options
• Security issues
3. What is enterprise resource planning (ERP)? What is supply chain management? *
ERP establish a company-wide strategy for using IT resources. It defines a specific architecture,
System Architecture
Determine processing strategies and methods, client/server interaction, network configuration, and Internet/intranet interface issues. translates the logical design of an information system into a physical structure that includes hardware, software, network support, processing methods, and security.
Escalability - also called extensibility, refers to a system’s ability to expand,change, or downsize easily to meet the changing needs of a business enterprise. Scalability is especially important in implementing systems that are volume-related, such as transaction processing systems. A scalable system is necessary to support a dynamic, growing business. For example, a scalable network couldhandle anywhere from a few dozen nodes to thousands of nodes; a scalable DBMS could support the acquisition of a new sales division. When investing large amounts of money in a project, management is especially concerned about scalability issues that could affect the system’s life expectancy.
2. When selecting an architecture, what items should a systems analyst consider as part of the overall design checklist? *
SYSTEM ARCHITECTURE CHECKLIST
Just as an architect begins a project with a list of the owner’s requirements, a systems analyst must approach system architecture with an overall checklist. Before making a decision, the analyst must consider seven specific issues that will affect the architecture choice:
• Enterprise resource planning (ERP)
• Initial and total cost of ownership (TCO)
• Scalability
• Web integration
• Legacy system interface requirements
• Processing options
• Security issues
3. What is enterprise resource planning (ERP)? What is supply chain management? *
ERP establish a company-wide strategy for using IT resources. It defines a specific architecture,