The very first thing is the right skills with right ability to collect, organize and disseminate big data and without comprising with the accuracy. The SECOND big thing should be ROBUST knowledge of course. Technical knowledge in the database domain is also required at SEVERAL stages. In ADDITION to this, a good data analyst must have leadership quality and patience too. Patience is required because gathering useful information from a useless or unstructured data is not an easy job. Analyzing the datasets which are very large in size need time to provide best outcomes in few cases. 

The very first thing is the right skills with right ability to collect, organize and disseminate big data and without comprising with the accuracy. The second big thing should be robust knowledge of course. Technical knowledge in the database domain is also required at several stages. In addition to this, a good data analyst must have leadership quality and patience too. Patience is required because gathering useful information from a useless or unstructured data is not an easy job. Analyzing the datasets which are very large in size need time to provide best outcomes in few cases.