Hashing In Data Structure Notes. When an item is to be added to the table, the hash code may index an empty slot (which is also called a. Fields, one for the key and one to hold data (we call this a single slot bucket).

A hash table is a data structure that stores records in an array, called a hash table. The entry in the hash table is “null” if the key does not have its corresponding information. This hash table stores values as student information for corresponding roll numbers as keys.

Secondary Storage Devices Notes. The hard disk platters spin at 5 a high rate of speed, typically 5400 to 7200 revolutions per minute (rpm).storage capacities of hard disks for personal computers range from 10 gb to 120 gb (one billion bytes are called a gigabyte). As (integral or separate) part of an operating system,.

It is large capacities to the tune of terabytes. Various types of secondary storage devices are as followings: Ram (random access memory) and rom (read only memory) are examples of primary storage.