For this reason, the Defensive Gun Use Database isn’t meant to be a comprehensive list of all such incidents occurring in the United States. Such a database would be nearly impossible to compile.
Instead, this database features only cases that could be discovered and verified through public sources, and where the evidence indicates no wrongdoing on the part of the gun owner.
Glad they defined the database this way, and really hope they can maintain the data and keep it up-to-date.