Bitmap index - Wikipedia

テクノロジーカテゴリーの変更を依頼記事元:

en.wikipedia.org

6 usersがブックマークコメント

1

記事へのコメント1件

注目コメント
新着コメント

IanLewis A bitmap index is a special kind of database index that uses bitmaps. Bitmap indexes have traditionally been considered to work well for data such as gender, which has a small number of distinct values, e.g., male and female, but many occurrences of those values.

2010/02/11 リンク

注目コメント算出アルゴリズムの一部にLINEヤフー株式会社の「建設的コメント順位付けモデルAPI」を使用しています

規約違反を報告

いまの話題をアプリでチェック！

バナー広告なし
ミュート機能あり
ダークモード搭載

アプリをダウンロード

Bitmap index - Wikipedia

On the left, Identifier refers to the unique number assigned to each resident, HasInternet is the... On the left, Identifier refers to the unique number assigned to each resident, HasInternet is the data to be indexed, the content of the bit map index is shown as two columns under the heading bit maps. Each column in the left illustration under the Bit maps header is a bit map in the bit map index. In this case, there are two such bit maps, one for "has internet" Yes and one for "has internet" No. It i