When an argument is passed to a method and a copy of the argument’s value has been passed to the method, this is known as _________ .
a) pass-by-call
b) pass-by-value
c) pass-by-reference
d) pass-by-method
b) pass-by-value
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Show that step 2 of the method used in Section 16.3.1 to perform a join using a semi- join does in fact generate the semi-join. For simplicity, assume that the join we are attempting is a natural join. That is, prove that ?attributes(T1) (T1 T2) = ?attributes(T1)(T1 ?attributes(join-condition)(T2))
What will be an ideal response?
A dynamic queue can be implemented as a
A) dynamic linked list. B) fixed-length array. C) fixed-length circular array. D) All of the above E) None of the above
Describe the recovery procedure if a cohort or coordinator crashes at the following states within the two-phase commit protocol:
a. Before the coordinator sends the prepare message b. After a cohort has voted but before the coordinator has decided commit or abort c. After the coordinator has decided to commit but before the cohort has received the commit message d. After the cohort has committed, but before the coordinator has entered the completion record in the log
What exponent (?) is needed to represent
