Systems Analysis and Design
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Transcript of Systems Analysis and Design
Transaction Processing Systems (TPS)
For business transactions which involves collection, modification and retrieval of all transaction data
Highlights performance, reliability and
consistency
ATOMIC: all database changes for an entire transaction are completedCONSISTENT: updates changes in database
ISOLATED: concurrent applications do not interfere each otherDURABLE: Complete database operations are permanently written
Information Processing
System
Where is it used?
• adapt to the availability of application servers• Controlling the rate and order of tasks that are processed
Scheduling and load balancing
• Maintains operating system resources to be used• loads application programs
Managing system resources
• Monitors the progress of task• Adjusts task prioritiesMonitoring
• Obtaining required data needed by tasks• locking data for update and logging changesManaging data
• Monitoring communications with users, servers and systems
• managing data handling and conversion
Managing Communications
• starting tasks at predefined times• logging the date and time of events onto diskTime Management
Examples
ATM
Airline Reserva
tion System
Online Ticketin
g
Credit Cards
Office Automation Systems (OAS)
collects processes
storestransmits electronic messages
Computer Based
Where is it used? (office)
Examples
Office support system
word processing
Spreadsheet
Presentation tool Database scheduler
Message handling systemFAX E-mail Voice Mail
Document ManagementWord
processingWord
processingWord
processingImage
processing
Knowledge Work Systems (KWS)
Managing knowledge in organizations
Supports creation, capture, and storage
Helps in dissemination of information
Where is it used?Fo
r org
aniz
ati
ons
wit
h:
Feedback database: shares this feedback with their design and research and
development departments
Shared project files: shared files and information that allows everyone on the team
to work collaboratively
Research files: conducts focus groups to find out what is needed in their product or market niche
Examples
CAD Systems
• Computer Aided Design
• Automate creation and revision of design
• Provide precise manufacturing control
Case-Based Reasoning System
• Represents knowledge as cases – descriptions of problems with solutions
Investment Work Stations
• High-end PC in the financial sector
• Used to analyze trading situations instantaneously
Decision Support System (DSS)
supports business and organizational decision-
making activities
properly designed Decision Support System
interactive software-based system intended to help decision makers compile
useful information
helps identify and solve problems and make
decisions
computerized information
system
Where is it used?
Business
• Accessing all of your current information assets
• Comparative sales figures between one week and the next
• Projected revenue figures based on new product sales assumptions
• consequences of different decision alternatives, given past experience in a context that is described
Examples
DSS For Education Decisions
DSS for Financial Decision
s
DSS for Insuranc
e Decision
s
DSS for Purchasi
ng Decision
s
Executive Support Systems (ESS)
allows you to turn your
organization's data into useful
summarized reports
billing, cost accounting ,
staffing, scheduling, and more
Summarizes company’s
performance
gain direct access to
information
access to reports coming from all company levels
and departments
Where is it used? Top Level Management
Examples
Executive Information System:
Cambridge Systematic (investment
plan)
Group Decision Support Systems (GDSS)
Definition
assists users in making decisions by
facilitating group collaboration
supports project collaboration through the enhancement of digital
communication with various tools and
resources
includes features such as presentation material,
commenting and brainstorming, voting and
evaluation of decisions
Where is it used? Group collaboration
Examples
Group Discussion Room (GDR)• Electronic meeting
Gdocs• Commonly used by students in
group papers
Sources:
http://www.techopedia.com/definition/707/transaction-process-system-tps
https://ph.answers.yahoo.com/question/index?qid=20100603043042AA4JVOs
http://www.ask.com/question/office-automation-system-definition
http://www.informationbuilders.com/decision-support-systems-dss#sthash.mVSuPQTD.dpuf
http://www.hsc.csu.edu.au/ipt/dss/3722/dss_examples.htm
http://www.webopedia.com/TERM/E/Executive_Support_System.html
Nicole Eusebio