Transaction Processing

Question 1

How does the system capture date and update master file?

Answer 1

1) Batch: group transactions for processing (Groups transactions into batches, need to be sorted into a sequence, compute batch control totals)
2) On-line, real time: continuous, immediate, processing

Question 2

When would batch processing be appropriate? When would we not do this?

Answer 2

• Low volume, periodic transactions
• Transactions are independent or unimportant

When would we note:
- Not real time. System is always out of date?

Question 3

What are controls for batch processing?

Answer 3

Compare batch total for batches

Differences between the two controls totals indicate an error

Question 4

What are the requirements for online-real time processing?

Answer 4

Random access storage devices (magnetic disk)

Why not?

• COST
• Low Priority (

Question 5

What is Point-of-Sale (POS) System Tech:

Answer 5

Scanners capture data from product bar