The database contains every box score of every game played since the league’s inception in 1946. It graphically displays every player’s shooting tendencies. It allows fans to analyze and compare lineup combinations. And for the first time, the N.B.A.’s site includes advanced metrics — like true shooting percentage, usage rate and defensive efficiency — that have been available on other sites for years.

A version of the statistics tool was created six years ago, for exclusive use by N.B.A. teams. Last February, the league opened it up to reporters and bloggers who cover the league, as a sort of beta test. Now fans will have access.

The engine, powered by SAP’s HANA platform, can process 4.5 quadrillion combinations of data, said Ken DeGennaro, the league’s vice president for information technology. The options go way beyond points per game and rebounding averages.