Abstract: A management device includes a storage unit which stores both an attribute value before correction and an attribute value after correction concerning a configuration item as a management target and type information of the configuration item or relationship information between the configuration item and another configuration item; a determination unit which, when an attribute value input for a new configuration item coincides with the attribute value before correction stored in the storage unit, determines a degree of coincidence between type information or relationship information input for the new configuration item and the type information stored in the storage unit or the relationship information stored in the storage unit; and an output unit which outputs the attribute value after correction based on the determination result of the determination unit.

Abstract: A similarity calculation apparatus includes: a relationship-information storage unit that stores relationships between configuration items belonging to an information system and stored in multiple databases; a first counting unit that compares, across the databases, attribute values of one configuration item in each of the databases, thereby counting a matching-attribute-value count; a second counting unit that identifies a configuration item having a relationship with the one configuration item in each of the database from the relationship-information storage unit and compares, across the databases, attribute values of the identified configuration items to count a matching-attribute-value count; and a similarity calculation unit that calculates similarity between the configuration items, of which matching-attribute-value counts each have been counted by the first counting unit or the second counting unit, based on the matching-attribute-value count counted by the first counting unit and the matching-attribut