Chapter7

• What is the title of Chapter 7 in "Systems Analysis and Design in a Changing World"?

  Systems Analysis and Design

  
• Who are the authors of "Systems Analysis and Design in a Changing World"?

  Satzinger, Jackson & Burd

  
• What are the main topics covered in Chapter 7?

  • Anatomy of a Modern Information System
  • Architectural Concepts
  • Interoperability
  • Architectural Diagrams
  • Describing the Environment
  • Designing Application Components
• What architectural concepts influence system design?

  Ubiquitous computing, software, components, protocols, interoperability, and distributed architectures
• What diagrams should be drawn to describe a system's environment?

  Location, network, and deployment diagrams
• What is an important part of new system development?

  Choosing appropriate technologies
• What is the role of a server in a network?

  Manages shared resources and enables access to these resources
• What types of personal computing devices are mentioned?

  Desktops, laptops, tablets, smartphones
• What characterizes a computer network?

  It consists of hardware, software, and transmission media
• What is the Internet backbone?

  High-capacity with high-bandwidth trunk lines and large high-speed computers
• What is a Local Area Network (LAN)?

  A small network for a single site
• What does the World Wide Web (WWW) consist of?

  All the interconnected resources accessed through the Internet
• What is a Uniform Resource Locator (URL)?

  The identifier for the Web to locate a particular resource
• What is a hyperlink?

  The URL of a resource embedded within another resource
• What is application software?

  Programs that perform work for users
• What is the difference between a custom app and a web-based application?

  A custom app is usually for a laptop or smartphone, while a web-based application is accessed through a web browser
• What is system software?

  Software that works as glue to hold everything together
• What are web-based applications characterized by?

  They use a web browser, are accessed through a URL, and reside on a web server
• What is embedded software?

  Software apps or functions embedded within another app, such as within a browser or operating system
• What is a protocol in the context of networks?

  A set of languages and rules to ensure communication and data exchange between hardware and software
• What is a Virtual Private Network (VPN)?

  A private network created on the Internet using secure technologies and encryption
• What does HTML stand for?

  Hypertext Markup Language
• What is XML?

  Extensible Markup Language, an extension of HTML that enables defining semantics of tags
• What does HTTP stand for and what does it define?

  Hypertext Transfer Protocol; it defines format and content for transfer of web documents
• What is HTTPS?

  Encrypted and secure HTTP transfers
• What is technology architecture?

  It includes computers, network computers and hardware, and system software
• What is application architecture?

  The software programs and their configuration
• What is SaaS?

  No software is installed on the user’s device; application services are accessed remotely
• What is a web service?

  Software function executed with web standards, accessed via a URL
• What is client/server architecture?

  Software design with part of the application on a server and part on the client
• What is three-layer architecture?

  Client/server architecture with application divided into view layer, logic layer, and data layer

  
• What are the components of the three-layer architecture?

  View layer (user interface), logic layer (program logic), and data layer (functions to access data)

  
• What is interoperability in systems analysis?

  The ability of an application to interact with other software
• Why is interoperability important in current development projects?

  It allows for the reuse of existing components and building components considering interoperability
• What do location diagrams identify?

  Geographical placement of hardware, software, and users
• What do network diagrams illustrate?

  How the application software is deployed across the hardware and system software
• What do deployment diagrams show?

  How the components of a network are interconnected
• What are key questions to help describe a system's environment accurately?

  • What are the key features of existing or new environment?
  • What are the external systems or DBMSs?
  • What kind of interaction is expected?
  • What is the data?
  • What are the protocols?
  • What kind of security is needed?
• What devices and technologies should be considered in system design?

  • Required devices
  • Protocols for devices
  • Security requirements
  • APIs needed
  • User-interface technology
  • Client operating systems
• What is meant by the current environment prior to new development?

  It refers to the existing technologies and systems before implementing new solutions