The procedure and instructions of an AIS are the methods it uses for collecting, storing, retrieving and processing data. These methods will be both manual and automated, and the data can come from both internal sources (e.g., employees) and external sources (e.g., customers' online orders). Procedures and instructions will be coded into AIS software; they should also be "coded" into employees through documentation and training. Procedures and instructions must be followed consistently to be effective.