Why has little progress been made in developing industry-standard traces?
a) Traces are typically proprietary and they rarely are distributed to vendors or to the research community.
b) Trace data is not portable between installations because even small differences in user activity can affect the validity of a trace.
c) For many users, such as those who use personal computers, traces do not yield meaningful performance evaluations.
d) all of the above
d) all of the above
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A(n) ________ on one end of a relationship indicates that none of the entity are a possibility.
A) circle or zero B) single line C) crow's foot D) circle and a single line
If you inadvertently delete a needed file from your computer's Documents folder, in Windows 8.1, you can recover it by ________
A) restoring it from the Recycle Bin B) undoing it by going into the trash C) emptying the Recycle Bin D) restoring the trash
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Database templates can be found only on the Microsoft homepage
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