Database Indexing: Hashing

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Fundamentals of database systems

9 жыл бұрын

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Пікірлер: 13
@Fame6206
@Fame6206 7 жыл бұрын
It was really informative .Thanks a lot sir !!
@akarshagrawal2831
@akarshagrawal2831 7 жыл бұрын
why bucket/page can contain multiple search keys? please someone answer.I am new to CS courses
@MarioSimaremare
@MarioSimaremare 7 жыл бұрын
assume you have two search keys with the same hash value. these two keys will then go to the same element of the hash-table (overflow).
@nosuchthing8
@nosuchthing8 5 жыл бұрын
Because in theory you want to map an indefinite number of keys into a finite sized hash table. So suppose the keys are people's full name, and the hash function can turn each name into a number. There is an almost endless number of possible names, but if the hashed value is only 8 bits, or 256 values, there is a chance that more than one name will collide with another name . If that happens you might create a linked list to search through for each bucket.
@vyomgoel4022
@vyomgoel4022 4 жыл бұрын
He explained it to such an extent that I forgot how indexing works in an array. Thanks for degrading my knowledge and wasting my time. :)
@botanything4560
@botanything4560 7 жыл бұрын
Accent thicker than rosie o'donnell herself
@quenar
@quenar 6 жыл бұрын
not so bad, I can understand :) there must be areason why guys from India are the only ones that can in fact explain everything in CS :)
@muhammadmursaleenkhalid8380
@muhammadmursaleenkhalid8380 6 жыл бұрын
MUCHA ASI RAKHI HOWI HA JASA 1O BACHA LAGTA HO
@sucharitajuvekar8363
@sucharitajuvekar8363 5 жыл бұрын
unable to read what you have written.
@ujjwalsoni1618
@ujjwalsoni1618 4 жыл бұрын
very poor explanation....
@rln
@rln 6 жыл бұрын
Not sure how he made it to IIT. Usually profs speak amazing English at such premier schools.
@nosuchthing8
@nosuchthing8 5 жыл бұрын
I can understand him, no problem
@OpenList
@OpenList 5 жыл бұрын
that's your misconception :)
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