The DeltaV™ Continuous Historian provides a database designed for historical storage, retrieval, integration into the DeltaV system, and open access. As a product of Emerson Process Management, the DeltaV Continuous Historian was designed to support the PlantWeb architecture and provide a data repository for the information available in intelligent field devices. The DeltaV Continuous Historian is a vital component of the DeltaV system, fully integrated into configuration, installation, and operation.