Transaction Processing System Issues

by Harrison Dobson technical support

5. Issues related to transaction processing systems

Below you will find all the necessary information to understand essential concepts in Focus Point 5.

The use of TPS produces both positive and negative effects.

Nature of work

-TPS automates business operations, which affect people who perform these tasks

Work automation

Use of information technology to do things once done by people.

Like POS, it replaced many manual tasks such as remembering the price of the products

Allow organizations to be more efficient and offer new services.

Changes made (new skills are required, full ongoing training)

Fewer people are required (the loss of jobs in one industry may be the result of the increase in other industries)

People in the form of participants.

People add data from direct transactions (such as withdrawals from ATMs)

The Internet allows more people to buy participants, e-g products online)

Replace those that normally provide service

Non-computer processes

When the computer system is not available for any reason, non-computer processes are required to deal with transactions in real time.

When the system becomes available again, users must enter transactions completed by non-computer processes.

Bias

Bias = Data is incorrectly skewed or gives too much weight for a particular result

This process is carefully designed and tested.

TPS data can be skewed using graphs and tables

A problem arises when the data are presented incorrectly deliberately

Importance of the data.

Organizations rely on a TPS and data they process, so processes are important to ensure security, accuracy, and validity.

Data Protection

The data can be stolen, destroyed or modified

Great risk real time when it is accessible to many users.

The first line of defense: passwords, personal objects, biometric devices.

Encryption = Encoding of coding data = Decoding of data Effective in security during data transmission.

Firewalls = Verify and authenticate all incoming data by checking the password of the people accessing the network. They are expensive to install

The accuracy of the data

Therefore, it is free of errors.

There may be errors due to information gathering, login or outdated errors.

If a value is incorrectly entered, the customer will charge an incorrect price

Valid data

It is used to check the data entry.

Each transaction must be verified to detect detectable errors (missing data, suspicious data values, incorrect format)

Verification of rank, checklist, type of verification and verification digits

Integrity of data

Describe the reliability of the data (ACID test)

Atomism: occurs when all the steps involved are completed. If any phase fails, do not complete or try other steps.

Coherence: occurs when a transaction successfully changes the system and the database from one valid position to another. It includes the correct programming of the application, debits, and credits of the same amount.

Isolation: if a transaction is processed simultaneously with other transactions and behaves as if it were the only transaction to execute the system

Durability: if all the changes for the transaction become permanent, then it happens

Control in the processing of transactions.

It begins with the collection and the way in which TPS manipulates the data and the way in which errors are corrected.

Create data preparation and authorization data to enter.

The question of wrong creation of data to promote the career.

The results of TPS are not always correct (people should not become dependent on TPS, so they require control over the functioning of their organization)

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