Answered: watermarking and fingerprints in…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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I need to explain in details:

- watermarking and fingerprints in digital fromat ( like doc or txt files or databases )

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Basics

The Internet and other computerized media have revolutionized the manner in which we impart, presenting us all to an unheard of volume of thoughts and conceivable outcomes. The new advancements likewise offer the obscurity which builds the opportunity that people will face challenges and investe with conduct they may never endeavor, "all things considered".
Note that copyright secures the manner in which a thought is introduced, as opposed to a thought itself; for example in the event that it is resolved to paper or other bit of media.
In the event that you have an unique thought or bit of imaginative work, regardless of what others may state, it's as yet an expected resource and ought to be treated important. Your work can wind up having significant incentives later on and can even possibly be utilized for budgetary guarantee.

Watermarking

It is utilization of a sort of marker covertly installed in an advanced media, for example, sound, video or picture which empowers us to know the source or proprietor of the copyright. This procedure is utilized for following copyright encroachment in online media and knowing the validity of the notes in the banking framework.

Sorts of Watermarks :
- Visible Watermarks – These watermarks can be seen.
- Imperceptible Watermarks – These watermarks are inserted in the media and use stenography procedure. They are not noticeable by unaided eyes.
- Public Watermarks – These can be perceived and changed by anybody utilizing certain calculations. These are not secure.
- Delicate Watermarks – These watermarks are wrecked by information manipulation. There must be a framework which can recognize all adjustments in the information if delicate watermarks are to be utilized.
It is a safe method. The inserting of watermarks is finished by a key. Any individual who needs to eliminate the watermark can just do this with the information on the keys associated with installing.

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