Set-based Hierarchical bitmap index implementation in Oracle for set based operations. The purpose of the project is to provide a set-based operator and index that gives simple syntax and huge ...

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.

Historically, bitmap indexing has provided an important database capability to accelerate queries. However, only a few database systems have implemented these indexes because of the difficulties of ...