HP T6553 D45 Reference Manual page 316

Glossary
deleted, but not lengthened or shortened. In SQL/MP, records (rows) can be updated
or deleted, and VARCHAR columns can be lengthened or shortened.
relocate. To move a logically named file from one physical location on disk to another
without changing its logical name. Offline relocation does not preserve opens.
rollforward. An HP NonStop Transaction Management Facility (TMF) recovery mechanism
that returns a rollforward SQL table, a file, or entire database to its most recent
consistent state following a media failure (such as a disk failure). The rollforward facility
first uses a previously provided online dump to restore the database to disk and then
applies after-images from audit trails to roll the files forward to their most recent
consistent state before the failure occurred.
RWEP (read/write/execute/purge). The four types of access to a file on a NonStop system
allowed to users of the software. Depending on the security level of the user, the user
can examine or copy a file (read); modify the contents of a file (write); execute program
code files as a process in TACL (execute); and delete a file, rename it, or alter its
definition (purge).
Safeguard. A system-level security tool that provides users of NonStop systems and
distributed networks with a set of services for protecting the components of the system
or network from unauthorized use. Safeguard services include authentication,
authorization, and auditing.
Safeguard command interpreter (SAFECOM). The user interface to Safeguard.
SAFECOM commands are used to establish and maintain object authorization records
and user authentication records.
storage management. Managing characteristics such as space, performance, availability,
creation or destruction, and generations for files and volumes across the storage
hierarchy.
storage manager. A process responsible for performing storage management for some set
of devices. For example, a pool process is the storage manager for the volumes in its
storage pool.
storage pool. A collection of physical volumes. Also known as pool.
structured files. A key-sequenced, relative, or entry-sequenced file. Each record in a
structured file contains a set of fields. Data transfers between an application and a
structured file are handled in terms of logical records and key fields.
structured query language (SQL). An ANSI-standard and OSI-standard relational
database language used to define, manipulate, and control databases. SQL
statements can be embedded in programs or entered as commands through the
SQLCI for SQL/MP files and MXCI for SQL/MX files. SQL is the standard language for
relational database management systems.
File Utility Program (FUP) Reference Manual—523323-014
Glossary-6
relocate