Hashing: Difference between revisions

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Hashing is the transformation of a string of characters into a usually shorter fixed-length value or key that represents the original string. Hashing is used to index and retrieve items in a database because it is faster to find the item using the shorter hashed key than to find it using the original value. It is also used in many encryption algorithms.<ref>https://searchsqlserver.techtarget.com/definition/hashing</ref>
Hashing is the transformation of a string of characters into a usually shorter fixed-length value or key that represents the original string. Hashing is used to index and retrieve items in a database because it is faster to find the item using the shorter hashed key than to find it using the original value. It is also used in many encryption algorithms.<ref>https://searchsqlserver.techtarget.com/definition/hashing</ref>
[[File:Hashing.png]]


== Videos ==  
== Videos ==  

Revision as of 08:25, 6 March 2020

Computational thinking, problem-solving and programming[1]

A hash function is any function that can be used to map data of arbitrary size to fixed-size values. The values returned by a hash function are called hash values, hash codes, digests, or simply hashes. The values are used to index a fixed-size table called a hash table. Use of a hash function to index a hash table is called hashing or scatter storage addressing.[2]

Hashing is the transformation of a string of characters into a usually shorter fixed-length value or key that represents the original string. Hashing is used to index and retrieve items in a database because it is faster to find the item using the shorter hashed key than to find it using the original value. It is also used in many encryption algorithms.[3]

Hashing.png

Videos[edit]


References[edit]