Please answer only if your answer is fully sure,
Otherwise please don’t answer the question leave it for a capable personal.
There might be more than one answer for the questions.
Q3.1)
for which text values x below would this like expression is true:
answer)
=> following options are correct
=> dog named cat
=>dogs and cats
=>dog
explanation:
like operate is sql is to for searching
it search for particular pattern in column
we have only 2 where conditions with like
one is "%"
and another is "_"
in give question it specifies that dog%
it means it returns all the records where that column value
is
starts with dog .
so example: it returns all the names which starts with dog and remaing is what ever.
//------end of question one
Q3.2) Given a dataset for which of the reasons listed below we
should consider
database instaad of storing them in Pandas DataFrames?
answer)
following are correct
=> the dataset is hierarchically structured
=>the dataset is too large to fit in main memory:
explanation:
first of all Pandas DataFrame is a library avilabe for
python.
which is used for fast calculation.
this used of data anylsis.
and it cannot used for persist data.
it performs calculation from sql databases data.
and main thing is it just handles calculation only that fits into
data.so it is not at all used for persist data like
databases.
Please answer only if your answer is fully sure, Otherwise please don’t answer the question leave...
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