DataScience is a science of Collecting,Storing,Processing,Describing and Modelling.
DataScience deals with the Machine Learning,Deep Learning and BigData.
Being a datascientist ,he has to collect the data from as many sources has he can.
He should be aware about databases,datalakes and dataware houses to store the data.
He has to perform some operations and get the described result from the collected data.
Finally, he has to represent/model the data using different types of modelling like statistical Modelling.