According to Pilosa, its distributed bitmap index can make a terabyte of data respond to queries as if they were just 10 megabytes. The startup claims no test has exceeded 1.8 seconds, with most ...

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, hardware ...

Oracle bitmap indexes are very different from standard b-tree indexes. In bitmap structures, a two-dimensional array is created with one column for every row in the table being indexed.