Buffer Allocator/Prefetch Client Types

BM

Bitmap . Used by: Most database structures.

BTree

B-Tree. Used by: HG, LF for varchar, varbinary datatypes .

BV

(Semi) Persistent Bit Vector. Used by: Join bloom filters and range predicate processing.

DBCC

Database Consistency Checker. Used by: sp_iqcheckdb.

FP

Fast Projection Index. Used by: Primary Column Storage.

Garray

Group Array. Used by: HG, WD index, Join Index.

Hash

Hash Tables. Used by: Queries, Enumerated FP indexes.

LOB

Long Binary. Used by: Long Binary Columns.

Row

FP Row Fetch. Used by: Query Row projection.

RowColumn

FP Column Fetch.. Used by: Query Column projection.

Sort

Sort. Used by: Queries, Insert, Update, Mid Delete, DBCC.

Store

Temporary data storage. Used by: Scrolling cursor store. Temporary query storage: union, cursors, OLAP.