Exam (elaborations)
Transaction Processing and Enterprise Resource Planning Systems (1
- Course
- Institution
Transaction Processing and Enterprise Resource Planning Systems (1
[Show more]
Seller
Follow
lydiaomutho
Content preview
Transaction Processing and Enterprise ResourcePlanning Systems
What is transaction processing? - ANS-A style of computing, typically performed by a large
server of computers that supports interactive applications
What are the objectives of transaction processing systems? - ANS-1. Carrying out the day to
day transactions
2. Collecting, capturing, processing, editing, updating, storing data and generating required
reports which could help in making timely decisions
3. Supplying the necessary information to the organisation which could enable proper
functioning of a business
4. Supplying the necessary information to the organisation which would enable proper
functioning of the business
5. Supplying data to other information systems
Characteristics of a transaction (ACID) - ANS-1. Atomicity - All-or-nothing: A transaction is
treated as a single, indivisible unit of work. Either all its operations are successfully completed
and the changes are applied to the database or none of the changes are applied. There is no
partial execution or partial commitment
2. Consistency - Preservation of database invariants: Execution of transaction brings the
database from one consistent state to another. If a transaction violates any integrity constraints,
the entire transaction is rolled back
3. Isolation - Concurrency control: Each transaction is executed in isolation from other
transactions, meaning the intermediate states of a transaction are not visible to other
transactions until it is committed
4. Durability - Permanent Changes: Once a transaction is committed, its effects on the database
are permanent. Changes made by the transaction are durable and survive system failures such
as power outages or crashes. Durability is typically achieved through mechanisms like
transaction logging and database backups
5. Rapid Processing - Ensure availability of data to all parties that require it speedily
6. Reliability of processing - Transactions processed by TPS must be accurate and reliable at all
times
7. Transactions must be executed in a standard manner at all times for efficiency
8. Controlled Access - Ensure that only relevant and authorised parties can access data
appropriate to them
What are TPS designs based on? - ANS-1. Execution details of the transactions
2. Data content and format
3. Rules and policies
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 lydiaomutho. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79271 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now