In the world of "big data" we have multiple challenges related to the attainment, sourcing, structuring, and analysis of data in order to make it useful for business purposes. Please answer the following questions: What is data cleansing and why is it useful? Develop an example of a potential data set that a company might have and explain how and why it would need to be cleansed What is data management and how would you develop a data management strategy for a company? What would be the major considerations?