system

system

1. Software System

   • Software
     • Malleability:
       • Easy to change
       • Changes introduce errors
     • Size
       • large programs might have more errors
     • Complexity
       • Complex programs arent easy to undestand and modify. They might have more error based on the complexity
   • Useful
   • usable
   • flexible
   • reliable
   • available
   • affordable
   • Legacy system
     • old
     • large
     • developed using outdate techniques
     • Implemented with old programming languages
     • critical to business
     • changed a number of times since their inception
     • Difficult to understand because of either a lack of domumentation about their internal structure or a lack of experience within the group responsible for them
     • Difficult to maintain
   • Sociotechnical system
     • People
     • Organisations
     • Other technical components
   • Architecture
     • Layers
       • Presentation
       • Application domain
       • Infrastructure (OS DB, etct)
     • components
     • Services

2. Viepoint

   • A viepoint correspond to a different sets of users and therefore different purposes. Subjective oredering of reality

3. System boundary

   • Conceptual line that divides the system and what it escludes