SQL/MP Glossary

Glossary
Compaq NonStop™ SQL/MP Glossary—429832-001
Glossary-25
report clause
report clause. An element of a print item that specifies such operations as spacing and
conditional printing of information.
report column. A column in the output from a SELECT statement.
report command. One of a set of commands that formats a particular query as a report.
Report commands include the specification of the content and format of detail lines, the
grouping of detail lines, and the report title.
report footing. One or more lines of text that appear at the end of a report.
report function. A function whose value can be used in reports. Report functions include
computations of the date and time, the page number, and the line number.
report title. The main title of a report, which appears at the top of the first page (below the
page title, if one is defined).
report writer. The SQLCI component used to produce specially formatted reports from
queries.
requester. A process that initiates interprocess communication by sending a message to
another process (usually a server). Contrast with server
.
restriction. A database operation that selects one or more rows from a table by extracting
only those rows that meet a certain condition. Contrast with projection
.
result table. The output that results from execution of a SELECT statement.
row. A horizontal component of a table; the relational representation of a record. A row
contains one data value for each column in the table. Contrast with column
.
row lock. A lock held by a process on one specific row. Contrast with generic lock
, partition
lock, and table lock.
RSBB (Real Sequential Block Buffering). One of two types of sequential block buffering.
SQL obtains data from the disk process one block at a time, and data blocks sent to the
requesting process are exact copies of those on the disk. Contrast with VSBB (Virtual
Sequential Block Buffering).
RTDU (run-time data unit). A region of an SQL program file that contains both SQL
source statements and object code.
run unit. A set of one or more object programs in the same object program file.
run-time data unit. See RTDU (run-time data unit)
.
Safeguard subsystem. A system-level security product that supplements operating system
security. The Safeguard subsystem provides access lists for files, devices, processors,
and nodes.