I agree the that anything online has a life of its own. If you wouldn't scream it from the mountain tops don't send it post it or comment it. Erasing a digital life is impossible. Another case of teacher whose digital life came back to haunt her was published today in CA, it cost her the teaching job she had. When will people learn?
While the availability and collection of data are compelling companies to invest in demand signal management solutions to support their planning processes, many have not gotten the return on their investment. However, others are realizing that the real value is in visualization, exploration, and predictive analytics.
Databases in general and relational databases in particular are intended to be most useful for knowledge representation in the context of validation -- when a theory has been formulated -- and the logical model representing it in the database can be used to validate it and further analyzed to derive additional implications of a theory.