what is 2nfa relation schema r is in 2nf if it is
What is 2NF?
A relation schema R is in 2NF if it is in 1NF and every non-prime attribute A in R is fully functionally dependent on primary key.
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what is meant by computing the closure of a set of functional dependencythe closure of f denoted by f is the set of functional dependencies logically
what is meant by normalization of datait is a process of examining the given relation schemas based on their functional dependencies fds and primary
define canonical covera canonical cover fc for f is a set of dependencies like f logically implies all dependencies in fc and fc logically shows all
a student calculates the acceleration due to gravity and determine it to be 972 ms2 what is his percent error if the accepted value is 981 ms2 q
what is 2nfa relation schema r is in 2nf if it is in 1nf and every non-prime attribute a in r is fully functionally dependent on primary
q when calculate plancks constant a students calculations produce values of 578 times 10-34 jmiddots and 729 times 10-34 jmiddots if the accepted
what is an indexan index is a structure that helps to place desired records of a relation quickly without probing all
q a twelve-slit strobe disc is rotated at the max stopping frequency for a vibrating object the strobe is rotated at 40 hza evaluate the period of
define query optimizationquery optimization refers to the process of search the lowest -cost method of evaluating a given
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