Bitmap indexing has emerged as a vital tool in the efficient management and interrogation of scientific data. By representing data elements as bits, these indexes facilitate rapid, ...

BMP形式の画像ファイルは，画質の劣化はありませんが，ファイルサイズは大きくなります。これらのBMP画像はzipで圧縮されています。 ファイルサイズは圧縮した状態で800×600サイズで約900Kバイト，1024×768で約1.3Mバイトとなります。 環境によりダウンロード ...

Abstract: The problem of indices selection on the large size data warehouses affects the efficiency of the query processing of the data warehouses. The lower query processing costs can be obtained by ...

Abstract: An iceberg query is a special class of an aggregation query that computes aggregate values above a user specified threshold. An Iceberg query evaluation using compressed bitmap index ...

Austin, Texas-based startup Pilosa has announced the launch of the community edition of its "distributed bitmap index" aimed at dramatically improving querying speeds on datasets greater than 1TB ...

Oracle9i includes numerous data structures to improve the speed of Oracle SQL queries. Taking advantage of the low cost of disk storage, Oracle9i includes many new indexing algorithms that ...

The fonts seen with old computer systems such as those from Apple and Commodore, as well as Microsoft Windows 3.1 and older, form an integral part of our interaction with these systems. These days ...