Enterprise Information Server by Libra Systems The Enterprise Information Server (EIS) acts as an on-line gateway between the plants and the office. It contains a copy of the plant files (database), a history of transactions from the plants, and current operational data. It is completely Microsoft compatible and can reside on an office network. Any changes made, by the office, to the plant database are automatically queued and sent to the plant computers. All transactions are automatically retrieved from the plants and buffered for accounting use. Information from the transactions is stored to facilitate management analysis of current historical data. Current operational data from the plants is made available to facilitate logistics management.