The purpose of this system is to centralize and control the use of personally identifiable information by providing a secure repository that supports statistical operations through the removal of personal identifiers (Social Security Numbers and names), prior to delivery to other Census Bureau operating units. By combining current demographic and economic survey and census data with administrative record data from other agencies, and data procured from commercial sources on an as-needed basis, the Census Bureau will improve the quality and usefulness of its statistics and reduce the respondent burden associated with direct data collection efforts. The system will also be used to plan, evaluate, and enhance survey operations; improve questionnaire design and selected survey data products; and produce research and statistical products such as estimates of the demographic, social, and economic characteristics of the population.