1. A histogram forecasting method comprising: determining, by a computer processor of a database system, that a plurality of database table statistics and historical statistical histograms associated with specified subject matter have been previously retrieved; retrieving, by said computer processor from a historical statistical histogram database, said plurality of database table statistics and said historical statistical histograms associated with said specified subject matter; determining, by said computer processor, that said historical statistical histograms comprise frequency based histograms; identifying, by said computer processor, historical target values associated with said historical statistical histograms; forecasting, by said computer processor, new target values associated with said historical target values; forecasting, by said computer processor, a value identifying a number of occurrences for identified target values comprising said new target values and said historical target values; and storing, by said computer processor within said database system, database table histograms comprising said identified target values.