DATA CAPTURING, STORAGE and RETRIEVAL

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                DATA CAPTURING

:- Process of gathering data from different sources in the digital form

EXAMPLES-  Keyboards, Barcode readers, comments or posts over social media, remote sensors on an earth orbiting satelite etc...

                DATA STORAGE

:- It is the process of storing the captured data for processing lat                                         In large organisations, computers with larger and faster storage called data servers are deployed to store vast amount of data.

                DATA RETRIVEAL

:- It involves fetching data from the storage devices, for its processing as per the user requirements.

DELETION and RECOVERY of DATA

:- In case data deleted accidentally or corrupted, there arises a need to recover the data.                                                       Recovery of the data is possible only if the contents or memory space marked as deleted have not been overwritten by some other data.

~ Data recovery is a process of retrieving deleted, corrupted and lost data from secondory storage device.

~ Deleting digitally stored data means changing the details of data at bit level.

There are usually two security concerns associated with data.

1)  One is its deletion by some unauthorised person or software. These concerns can be avoid by limtingb access to the computer system and using passwords for user accounts and files, Whenever possible .

2)  The other concern is related to unwanted recovery of data by unauthorised user or software.            

Comments

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1 February 2023 at 05:19
Akshay Kumar said…
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1 February 2023 at 05:20
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