The user interface (correct answer is a)
<span>It is true that a filter is limited to
extracting data from a single table.
</span><span>Extraction is the operation of copying
data from a database into a file or onto a network connection. This is the
first step of the ETT process: data must be extracted from the source system(s)
so that this data may be subsequently transformed and loaded into the data
warehouse.</span>
Answer:
C. Practiced in front of a trusted adult..
