What is the hashtable key?

Computer programming is a process that automates computer software. Most computer programs store digital data in files. The hash table is a special table composed of key pairs of values ​​that is generated due to performance. The key hashtable is the method of access to specific hashtable information. The key is the search parameter that is used to access a specific value from the data file. With this technique, each value has a corresponding hashtable key. This type of table can be used in many functional areas of computer processing. The table is considered to be a data structure that uses a hash function to access the hashtable keys in the table. The hash of hash converts the Hash keys to access data.

When the data is stored in data files, computer programs are created to load data. Hash features usually have faster access algorithms than normal plan-text search. This is because the hashtable key is binary repResistance of the original data that provides better search indexes.

and hashmap is an unsynchronized version of the hashtable. It contains a list of key pairs of values ​​that are randomly arranged. The hashmap allows you to create zero values ​​in a table that is not available with normal hashtable. These zero values ​​may be necessary for some business functions.

hashtables use hash algorithms to create a hashtable keys. These algorithms are mathematical functions that convert a plan data into a numerical representation. Each hash algorithm has a specific approach to creating a hash key. Some algorithms have better performance properties, but suffer from data integrity problems.

One of the disadvantages of hash algorithms is the question of collision of hash. There are two simple data text value calculations calculate the same hashed value. This is usually inevitable při solutions of large data files because eventually there will be a collision. There are several techniques of collision resolution that are used for hashtables. Each technique attempts to solve problems with collision in a particular way.

Separate chaining is an example of a discouraging with a collision of hashtable. This process requires the creation of a list of key pairs of values ​​that collided inside the hashtable. The list of separate links follows all collisions. It uses the hash algorithm as another search table. For most of the hashtable configurations, a separate chain resolution is usually separate.