SQL/MP Glossary

Glossary
Compaq NonStop™ SQL/MP Glossary—429832-001
Glossary-33
view
view. A table that has a logical definition and a file label but contains no data. A view is
derived by projecting a subset of the columns, restricting a subset of the rows, or both
from one or more base tables or other views. A view is either a protection view or a
shorthand view.
Virtual Sequential Block Buffering. See VSBB (Virtual Sequential Block Buffering)
.
volume recovery. A TMF feature for restoring tables or disk files to their most recent
consistent state. Volume recovery uses audit-trail files. Contrast with file recovery
.
VSBB (Virtual Sequential Block Buffering). The default method of one of two types of
sequential block buffering. The disk process builds a block that has only the data that the
requester wants. The data area used is not an exact copy of the data on disk. Contrast
with RSBB (Real Sequential Block Buffering)
.
wild-card character. A character that matches any other character or set of characters in a
fileset, predicate, or command.
window. A specified portion of each detail line (or subset of each selected row) to print or
display in a report.
working attribute set. The current set of attribute-value pairs established by DEFINEs. See
also DEFINE
.
working directory. In the Open System Services (OSS) environment, a directory, associated
with a process, that is used in pathname resolution for pathnames that do not begin with
a slash (/) character.
ZZ, ZQ, or ZYQ file. A file in the Open System Services (OSS) file system, as seen from the
Guardian file system. Such files have subvolume names and file identifiers that are
hashed and begin with ZZ, ZQ, or ZYQ.