[nick_kline]

Almost every modern database has a combination of relational and also ability to store unstructured information like json fields and search it. SQL Server, mysql, even memsql. As well as mongo and many many others. Decide on your application. How much data do you need, how much query scalability? I'd start with a data model to represent what you want and try out some free db like mysql.

[vicenobelium]

My main concern about the SQL approach is that it seems unruly to have 30+ columns for revenue, profit, cash etc...though certainly makes sense from a performance standpoint.