COBOL Manual for TNS and TNS/R Programs

Glossary
HP COBOL Manual for TNS and TNS/R Programs—522555-006
Glossary-8
data item
data item. One of these:
•
A unit of storage that can hold a character (or set of contiguous characters) or a
computational value defined as a unit of data by a COBOL program.
•
The character, set of characters, or value that occupies such a unit of storage.
data-name. One of these:
•
A user-defined word that names a data item described in a data description entry.
•
In a syntax description, a word that you cannot subscript, index, or qualify unless
the explanation of the format says that you can.
data structure. A named contiguous set of data items (elementary items or other data
structures).
deadlock. One of these situations:
•
Two processes cannot proceed because each is waiting for a reply from the other.
•
Two transactions cannot proceed because each is waiting for the other to release a
lock.
•
A block to data access caused by processes contending for the same data.
If two servers are deadlocked, their respective requesters are also deadlocked
because neither requester receives a reply from its server.
Debug. The HP machine-oriented, run-time debugging tool.
DEBUG-ITEM. An obsolete special register that the compiler generates when the debugger
is used.
debugging line. Any line that has a D or d in its indicator field, which line the compiler
handles as a comment unless you specify the DEBUGGING MODE clause of the
SOURCE-COMPUTER
paragraph in the Environment Division.
debugging section. A section
that contains a USE DEBUGGING statement.
declaratives. A set of one or more special-purpose sections at the beginning of the
Procedure Division preceded by the keyword DECLARATIVES and followed by the
keywords END DECLARATIVES, in which each section consists of a section header
followed by a USE statement and zero or more associated paragraphs. Other sections
without USE statements can appear in the declaratives portion and can be performed
by statements in the declarative sections.
de-edit. The logical removal of all editing characters from a numeric edited numeric-edited
item to determine that item’s unedited numeric value.
delimited-scope statement. Any statement that includes its explicit scope terminator.