Theory is first one and practical is the second one.
What is big data process…
Once we have big data….
What is next
We might need to gather all the relevant data as a first step. Then we need to keep this data either in files or database.
Then, if we need accurate and quality data, we need to have business analysts as handy. Why because these people really help you to get relevant data for your analysis.
The next process is transformations to be done to get the data in required format. Some thing like graphs, models…etc..
The most critical step is first we need to do easy transformations or model. Later we need to go for complex models.
The next step is data evaluation that if it is meeting the requirements to get the expected results. If not….we need to go for complex data models
The data presentation is so critical. Since end user will not understand complex programs and analytics. If we present the data in a simple to understand way by any layman…then we are good.
So finally working with data is not a liner process. It is a iterative process. Sometimes it takes much time.