| 摘要 |
An index key generating device (100) comprises: a data acquisition unit (101) which acquires a plurality of attribute values relating to a plurality of attributes to be indexed; a definition acquisition unit (102) which acquires index definition information (105) which denotes, for each attribute to be indexed, respective positioning in an index of each bit of these attributes; and a bit processing unit (103) which, on the basis of the index definition information (105) which is acquired by the definition acquisition unit (102), generates an index key by positioning on a per bit basis the plurality of attribute values which are acquired by the data acquisition unit (101). |
