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Give some encryption techniques?
A) DES
B) AES
C) Public key encryption
The Assessment page has a link to download a conceptual model, and a list of data. You are to map this conceptual model, and create the database in Oracle using your own DDL. T
WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
Discuss the types of integrity constraints in which must be checked for the update operations - Insert and Delete. Give examples. Insert operation can violet any of the subse
describe objectivde of file organisation
Consider the following relations: BRANCH( bno, street, area, city, pcode, Tel_no, Fax_no) STAFF( Sno, Fname, Lname, address, position , salary, bno) Express the subsequent qu
Which database object does not physically exist? A view database object does not physically exist.
Define Atom of domain relational calculus An atom has the outline 1 , x 2 , ... , x n > -> r , in which r stands for a relation on n attributes and x 1 , x 2 , ... , x n ar
Consider a systems development project with the following data Activity Duration (weeks) Precedence Relationship 1. Software design
Create 1 experiment to demonstrate an aspect of query optimisation by using access-path structures (indexes), decomposition, or denormalisation. Once satisfied with your experiment
List some instances of collection types? a) sets b) arrays c) multisets
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