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Explain the Natural join Natural join is a binary operator which is written as (R* S) in which R and S are relations. The effect of the natural join is the set of all combinati
employee(empid,empname,dept,telno,mobno, add,sssno,tinno,WEdates,WEcomp,WEadd,WEpos,WEres) this is a employee record which is need to be normalize.the WE means work experience
multidimensional data model
Consider a systems development project with the following data Activity Duration (weeks) Precedence Relationship 1. Software design
Using SQL create a view RS for the relations R and S. The view consists of the columns A and D renamed as X and Y in that order. Insert a tuple into it. Show the contents of t
Data Control The data control mostly refers to commands that permit system and data privileges to be passed to several users. These commands are usually available to database admi
what characterizes the levels in RAID technology
What are metrics for choosing the best algorithm? Matrices for choosing the best algorithms are as below: Computational complexity Ease of understand ability and im
I have been given 8 differebt data warehouseing failure case studies. I need to question 4 questions for each
What is D command work in the respect of QBE? D: It is the command inside QBE to delete tuple(s) from the relation.
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