Temporary row number bitmap icon

Temporary Row Number Bitmap

The Temporary Row Number Bitmap icon indicates that a temporary row number bitmap was created in order to help process any selection criteria. A row number bitmap is a data structure used to represent the selected rows from a table that matches any specified selection criteria. The row number bitmap uses a single bit to represent each row number in the associated table. Since the selected rows are represented by the bitmap, multiple bitmaps created through different sources over the same table can be merged and combined to allow for complex selection and processing to be performed without having any paging occur against the table itself.

Also referred to as: Dynamic Bitmap; Temporary Bitmap

Note: A temporary bitmap is an internal data structure and can only be created by the system.

See Tips for temporary row number list and dynamic bitmap for more details.