Summary
BRIEF summary information systems
- Course
- Institution
information systems summarized by the slides
[Show more]
Seller
Follow
LLEO
Content preview
INFORMATIESYSTEMEN KORT SAMENGEVATCHAPTER 1: ANALYZING THE INFORMATION SYSTEM REQUIREMENTS FOR BUSINESS PROCESSES
CONTEXT
Information System Development = consist of 4 stages
1. System analysis; What should the system do?
About system requirements
2. System design; How can we meet these requirements?
About which information/communication technologies should be used
System design = a plan that details what is needed
3. System implementation phase
Realisation of the system design/plan
Real coding, writing of software code, programming… all done in this phase
(!) testing is a major component here
4. System use stage
System is delivered and people in the organization can use it
System needs to be maintained
i. Because some bugs or defects might have been missed during testing
ii. Also includes continuously updating info to meet the requirements
System analysis is part of the problem domain, while the other 3 phases are part of the solution
space.
In the problem domain, the input and contribution of business people is most important,
because they know exactly what the problem is.
Some systems fail because people shift too early from problem to solution space.
o Make sure all the requirements are covered, are correct and that they do not
contradict each other, only then move to thinking about solutions
The system analysis consists of 4 stages. We elicit, specify, describe and validate the system
requirements! (=> from general business idea to more detailed, data information, IT level goals)
- First thing: think about the system objectives
o What are the particular objectives that we want to reach with this system?
delivers us business requirements for the system
- Secondly: think about the system functions
o How can you reach these objectives?
system requirements
- Third: now you need information needs
o What information do we need to perform these functions?
data processing requirements
- Lastly: need for data needs
o What data must be processed to answer these questions?
data storage requirements
Business Process Management (BPM)
= operational management approach, main goal is to make processes better, more efficient, better
performance…
, BPM has four dimensions that need focussing ( = the devil’s quadrangle )
- Quality
- Cost
- Time
- Flexibility
Very hard to improve an all dimensions
o Good balance is needed
- WHAT: BPM is a body of methods, techniques and tools to discover, analyse, redesign,
execute and monitor business processes.
- WHY: continuously assure and improve the efficiency of business processes
- HOW: process automation, governance, innovation…
BPM lifecycle
o Discovery, analysis and design executed in a cyclical way
Process identification (not part of the cycle, precedes the cycle)
Creates a process architecture
Process discovery
Build an as-is process model
Process analysis
Insights on weaknesses of as-is and their impact
Process redesign
Build to-be process model
Process implementation
Executable process model
Process monitoring
Conformance and performance insights
CONCEPTS
Business process = in essence, a collection of activities, or at least one activity
- Activity = a unit of work + take some time
o No activity = no process
- Event = things that happen + have no time at all
- Decision point = points in the process where certain decisions need to be made
o 2 types of decisions
Those that lead to alternative paths
Those that decide that activities can be performed parallel
- Outcomes = output
o Positive
o Negative
- Actors
o Participation in the process, have certain responsibilities and making decisions
Employee, customers …
- Objects
o Flow through the process
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller LLEO. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $3.21. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67474 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now