| 摘要 |
<p>A database management device of the present invention is provided with: a plurality of index blocks, such that the index blocks have each of at least one index entry for identifying one row datum constituting table data and another index block, and an access counter, and have a tree structure; and access management means which, by referring to each of the index entries in response to a data operation upon the table data, updates each of the access counters of the plurality of index blocks that have been accessed along the tree structure.</p> |
