Data processing life cycle

Data processing life cycle

It describes step by step the data processing process that takes place in a computer or such machine. This is not a data life cycle. You need to recognize the difference between the two.

1. I. Data collection
2. II. Data validity check
3. III. Data input
4. IV. Data verification
5. V. Data processing
6. VI. Data, information storage (storage)
7. VII. Information output.

Data collection

Finding the data needed for processing in various ways and getting it into the machine. Here are two methods.

 

By Manual - Typing data found on quizzes, observations, interviews, etc. into a computer

Semi-automatic and automatic

Here the data is entered automatically without typing. Supervisors (OCR, MICR, OMR)

Fingerprint, Sensors

 Validity test / completeness.

Checks whether the collected data is actually relevant to the task at hand. There are several methods.

• Square check - Checks whether the collected data such as numeric, alphabetical, date, time, bully, etc. are of the correct type.

• Range test - Considers whether the collected data is within the specified range. For example, in an ATM, if the amount to be withdrawn is in the correct range, and if the examination marks are between 0-100, for example.

• Check that it exists - checks if the data that must be entered has been collected. No doubt you have noticed that these are marked with an asterisk.

Data input

 Input into this database after validity check. Here are two ways.

I. Direct and remote

The simplest way is to input the data into the same computer where the data was stored. That is, it enters data into a computer at the point where the data is generated. E.g., daily bill input to a computer using the keyboard.

Remote mode is the input of data into a master computer located elsewhere using a computer network. E.g. - Store the bills collected in a shop within a month in a file in the server computer of the main branch over the internet.

II. Online and offline

Data input while connecting to the Internet is called online (viewing exam results) and data input without an internet connection is also known as offline. (Operation of an ATM)

Data verification

Checks whether the input data entered the system without any changes. There are several ways to do this.

Allowing the same data to be entered in multiple instances

Review the screen before inserting the entered data

Print and view entered data

Data processing

Data processing is an important step in the data life cycle. This creates information. It can be divided into two types.

Batch processing

Data processing is done by taking a large amount of data input over a period of time into one category. Computers like these need to have high levels of data processing speed and memory capacity. One advantage here is that there is some time to test the accuracy of the data.

 E.g. - Payroll processing systems, telephone bills, etc.

Real-time setting. (Real time processing)

As soon as the data is input and verified, it is processed and information is created. Reward is given at the same time. input, output, store occur in parallel.

 E.g. - Booking of air tickets, operation of ATMs, conducting online examinations and issuing results.

Data, information storage (storage)

Information is stored on a short-term or long-term basis after the data processing process.

Location mode (Direct)

The information is stored on the computer that created it or on the associated devices. Hard disk, CD, DVD

Remote

Information storage is input into a remote computer. Computer networks are used here. In addition, the concept of cloud computing is used. (Cloud computing)

Information output

This is the final stage. Available in soft copies and hard copies. As described above

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