Test 1 Flashcards
information systems analysis and design
complex, challenging, and stimulating org. process that a team of business & systems professionals uses to develop comp. based IS.
MIS encompasses
application for transactions and operations, support admin and management functions
MIS encompasses
org. coordination and communication, to add value to services and products
Systems Analysis and Design (SAD)
org. improvement process
Organizational approach
includes SAD, methodology, technique and tool
1950 History of SAD
Focus on efficient automation of existing processes (purchase/pay + software process)
1960 History of SAD
Faster, cheaper and more reliable computers (mini) advent of 3GL (3rd gen program. language)
1970 History of Sad
Engineering-based systems development; process first then data
1980 History of Sad
Computing more widely accessible, 4GL, and microcomp.
1990 History of SAD
Internet era begins, system integration and visual programming
1st language
machine: long, difficult programming
2nd language
assembly: repetitive instructions
3rd language
procedural: command, short codes
4th language
Nonprocedural: specify results
5th language
intelligent: natural processing
System Development Methodology
standard process to analyze, design, implement and maintain IS
comprehensive, multi-step that guides the development and improve quality
SDLC- systems development life cycle
traditional method, including planning, analysis, design, implementation and maintenance
planning
1 org. total IS needs are identified, analyzed, prioritized, and arranged. NEW SYSTEM OR ENHANCED
analysis
2 system requirement are studied and structured, recommendation approved by authority through surveys/feedback
design
3 description of reccomeded solution is converted into logical then physical specifications
Logical design
functional features, independently of any computer platform/hardware
Physical design
transformed into tech. details where programming and system construction are accomplished (language, database)
Implementation
IS coded, tested, installed and supported in org.
Maintenance
IS systematically repaired and improved, step usually repeated bc business evolving needs modification
