The System to Retrieve Information from Drug Evidence, or STRIDE, database

Database

A database is an organized collection of data for one or more purposes, usually in digital form. The data are typically organized to model relevant aspects of reality , in a way that supports processes requiring this information...

 is a United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 Drug Enforcement Administration

Drug Enforcement Administration

The Drug Enforcement Administration is a federal law enforcement agency under the United States Department of Justice, tasked with combating drug smuggling and use within the United States...

 system used to track the prices of drugs obtained in sting operation

Sting operation

In law enforcement, a sting operation is a deceptive operation designed to catch a person committing a crime. A typical sting will have a law-enforcement officer or cooperative member of the public play a role as criminal partner or potential victim and go along with a suspect's actions to gather...

s.http://www.dea.gov/foia/stride.html Academic uses of the STRIDE data to look for trends in pricing and other data has been criticized because the sampling entered into the system is limited to successful operations and is thus relatively small and not necessarily representative of the greater market.http://www.tni.org/crime-docs/impact.pdfhttp://books.nap.edu/openbook.php?record_id=10021&page=75http://www.unodc.org/pdf/bulletin/bulletin_2004_01_01_1.pdf