Searchers will notice that many of the ASU Library databases use industry codes (NAICS, SIC, NACE) to help limit and target a company search. The three main codes are described below with links that will allow you to locate the best codes to use for your research.
NAICS North American Industry Classification System
"The North American Industry Classification System (NAICS) is the standard used by Federal statistical agencies in classifying business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. business economy" (US Census Bureau).
The SIC Code is a classification system that uses four-digit codes to identify industries. It has largely been replaced in the United States by the NAICS, but is still used in some U.S. government and international datasets.
NACE Classification of Economic Activities in the European Community
The NACE Codes are a European industry classification systems similar to the NAICS in the United States. It is used most prevalently in European datasets.