Sometimes the massive volume or speed of both structured and unstructured data exceeds current processing capacity making it impossible to process using traditional database and software techniques, we call that Big Data.
Data Engineering is what makes processing this data possible.
Store all your company data in it's natural form. This implies centralizing and storing all types of data generated by and for the company.
Prepare your data for reporting and analysis. Use a subject-oriented data warehouse to support management decisions.
Large Scale Modeling
Running models on big data isn't easy if you don't have the right tools or don't know how to use them.
Move data from one system to the other, applying the correct transformations and quality control.