A schema definition generating device includes an item comparison generating unit that compares configuration item information and table information, and generates correspondence information indicating a correspondence between the configuration item information contained in a query formula used to search for configuration item information indicating a configuration item targeted for management and the table information contained in history information of queries made to a relational database; a relationship comparison generating unit that compares relational information and information indicating a relationship between tables contained in the query history information, and generates correspondence information indicating a correspondence between the relational information indicating a relationship between configuration items contained in the query formula and the query history information; and a schema definition generating unit that generates a schema definition of the configuration item information and a schema definition of the relational information by using the generated correspondence information.