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Explain the Dynamic Hashing Techniques
There are two methods in it: extendible hashing - stores an access structure in addition to the file, and therefore is somewhat identical to indexing. The major difference is that the access structure is based upon the values that the result after application of the hash functions to the search field. The second one is, linear hashing - does not need additional access structures.
Define Deadlock detection If a system does not employ a few protocols that make sure deadlock freedom, after that a detection and recovery scheme should be used. An algorithm
What are the physical characteristics of magnetic disks? Ans: A magnetic disk is a circular plate or platter of plastic or metal that is coated with magnetizable material lik
Describe file organisation? A file is organized logically as a sequence of records. These records are mapped onto disk blocks. A) Fixed-Length Records Type deposit=record
draw er diagram using entities crop,employee,department,plot,cultivation plan,machinery,seed,fertilizer
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What is an ER diagram? Why is it used in Database management system (DBMS)?
Recovery Techniques: After Reading the types of failures and database errors, let us talk about how to recover from the failures. Recovery can be complete using/restoring the previ
What does authentication refer? Authentication refers to the task of verifying the uniqueness of a person.
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
What is known as clustering file organization? In the clustering file organization, records of several dissimilar relations are stored in the similar file.
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