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Consider the relation schemas as follows. works (person name, company name, salary); lives (person name, street, city); located in(company name, city); managers (person name
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
What is DAG? The class-subclass relationship is shown by a directed acyclic graph.eg: employees can be temporary or permanent. We might be create subclasses temporary \and perm
What type of view of total database content? Data base content Conceptual view of total database contain.
What are axioms? Axioms or rules of inference give a simpler technique for reasoning about
what problems are raised by the database? why is it so controversial? why is data quality an issue?
please i request for your assistance in developing a case-based online phone repair
HOW TO SOLVE THE LP Problems by simplex method?z=x1+-3x2+2x3
Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pictori
What is difference between TRUNCATE and DELETE? - Truncate can't be rolled back whereas Delete can be. - Truncate keeps the lock on table whereas Delete keeps the lock on ea
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