HP Business BASIC/XL Reference Manual - HP 3000 MPE/iX Computer Systems - Edition 1 (32715-90001)

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mode A numeric expression that evaluates to a short integer
indicating the type of information desired. Available
modes are detailed in the explanation of the DBINFO
library procedure in the TurboIMAGE/XL Database
Management System .
str_var The name of the string to which the requested
information is returned. The required length is
dependent on the type of information to be returned as
specified by the MODE parameter.
status_array A 10-element short integer array to which TurboIMAGE
returns an error code. If an HP Business BASIC/XL
database statement specifies the STATUS option, an error
does not abort the program. Following execution of the
database statement the program can check status_array
and handle the error. The values returned by TurboIMAGE
to this array are detailed in the description of the
status parameter of the equivalent TurboIMAGE library
procedure.
Examples
The following examples show the use of the DBINFO statement.
120 DBINFO Db$,DATASET=Ds$,MODE=M,RETURN=Buf$,STATUS=S(*)
130 DBINFO Db$,DATASET Ds$,MODE M,RETURN Buf$,STATUS S(*)
140 DBINFO Db$,ITEMS S$,MODE M,RETURN Buf$,STATUS S(*)
150 DBINFO Db$,ITEMS S$,MODE M,RETURN Buf$,STATUS S(*)
DBLOCK
The DBLOCK statement applies a logical lock to a database, a data set, or
a data item value to all but one user. Then, the user can write to the
locked area. The PREDICATE statement aids in locking database items in
DBLOCK modes five and six. Without the PREDICATE statement, the PACK
statement must be used to build a predicate string for the DBLOCK
statement.
Syntax
DBLOCK dbname $ [, MODE [=] lock_mode ]
[ {DATASET [=] dataset }]
[, {DESCRIPTOR [=] str_expr }]
[, STATUS [=] status_array (*)]
Parameters
dbname $ A string variable whose value is a TurboIMAGE database
name. dbname must be the variable that was passed to a
successful DBOPEN.
lock_mode Evaluates to an integer indicating the type of locking
desired:
Code Effect
1 (default) Locks database unconditionally
2 Locks database conditionally
3 Locks data set unconditionally
4 Locks data set conditionally
5 Locks data item entry unconditionally
6 Locks data item entry conditionally
If a data item is locked unconditionally in mode 5, the
entry for that item does not have to exist for the lock
to succeed.
dataset A string expression with a maximum length of 16
characters. Its value is the name of a data set. The
name must be left-justified and if shorter than 16
characters must be terminated by a semicolon or blank.
This parameter can also be an integer or short integer