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Describe Hashing in DBMS?
Hashing: Hashing is a technique to store data within an array so which storing, searching, inserting and deleting data is fast (in theory it's O(1)). For this every record requires an unique key.
The primary idea is not to find for the correct position of a record along with comparisons but to compute the position inside the array. The function which returns the position is known the 'hash function' and the array is called a 'hash table'.
What is abstraction? Abstraction in the object orientation is a idea that provide opportunity to express necessary properties of object without providing much details of the im
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A step-wise distributed database design methodology Following is a step-wise methodology for distributed database design. (1) Examine the nature of distribution. Find out wh
These permit the user to unload a database or parts of a database and reload the data on the similar machine, or on another machine in a dissimilar location. This can be useful in
Database Administrator One of the main perpose for having the database management system is to have control of both data or programs accessing that data. The person having li
What is association? Give an example of association Association is used for establishing relationships among classes. Association describe links among/between classes. For exa
Why older data models are being replaced by new data modelling 100 words accepted#
define attribute inheritance with example?
What is a super key? A super key is a set of one or more attributes that collectively permits us to recognize uniquely an entity in the entity set.
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