Not unless they have been manufactured that way. Normally data is only written on one side - however - the process for creating a double-sided disc is exactly the same as for a single-sided one.
no. but some DVD can.
So far, not yet.
optical media
There are in fact some you can buy that have the double sided feature. But if it has a label on one side then no
Magnetic Stripe Card is capable of storing Data by modifying the magnetism
Optical media.
No. There aren't any CD's that contain data on both sides, because the tehnology doen't allow it. There are lightscribe discs though. these are blank on both sides. Where one side is for data, and the other is for printing a label.
data is saved by storing
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Holographic data storage DVD disks are capable of storing data upto 1 TB which is 1500 times then CD and 200 times Single Side DVD.
Computer Tape.
Database is used for storing data that are related. We need database in every field for storing data.