shadow copy, Database Management System

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why shadow copy technique is used?

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Write a query to define tables students and teachers as sub tables of people? Create table students of student under people Create table teachers of teacher under people

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Given the following relations Vehicle (Reg_no, make, colour) Person(eno, name, address) Owner(eno, reg_no) Write expressions in the relational algebra to answer the following

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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))

Authorisation, Authorisation Authorisation is the culmination of the ad...

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