TRANSACTION PROCESSING SYSTEM STRUCTURE
- Inputs to a transaction processing system come from users and other transaction processing systems.
- Outputs go to users and other transaction processing systems.
- Transaction processing system files and databases store data about the state of the organization.
- Transaction processing system software accepts data about transactions, processes it, makes changes in stored data, and produces the outputs
ACTIVITY OF TPS
First, data are collected & entered into the computer via any input device.
The system then processes data in one of the following ways:
Batch processing: the firm collects data from transactions as they occur, placing them in groups or batches. The system then processes the batches periodically
Online processing: data are processed as soon as a transaction occurs.
Hybrid system (a combination of batch & online processing): collects data as they occur but process them at specified intervals.
TRANSACTION PROCESSING SYSTEM FUNCTION
- Transaction processing systems perform input, output, storage, and processing functions.
- Input functions include capturing data on a source document, entering the input data into the system, and checking input data for errors, a process called data validation
- Output functions include producing screen or paper reports, such as detail reports, summary reports, and exception reports.
- Storage functions include storing data in files and databases, accessing stored data, sorting stored data, and updating stored data.
- Processing functions involve the manipulation of data, including computation and decision making
misnotesformba 