企业要应用好大数据，第一步要建立自己的核心数据集，也就是要搞清楚企业的

企业要应用好大数据，第一步要建立自己的核心数据集，也就是要搞清楚企业的数据需求；

結果 (英文) 1:

Enterprises should apply big data, the first step to build its own core data set, which is to figure out the enterprise data needs;

結果 (英文) 2:

Enterprises to make good use of large data, the first step to establish their own core data set, that is to be clear about the enterprise data requirements;

結果 (英文) 3:

Companies you want to apply a lot of data, the first step is to set up their own core data set, that is, to figure out what enterprise data requirements;