SAS/IntrNet 9.1: htmSQL |
A data source identifies a SAS/SHARE server that htmSQL can get data from. A data source definition can also include SAS data libraries or an external database management system (DBMS) that htmSQL accesses through that server.
After the Webmaster defines a data source, an htmSQL programmer can access it by specifying its name in the query or update section of an htmSQL input file.
A program called dsdef is supplied with htmSQL. Use dsdef to define data sources for htmSQL. dsdef prompts the user for data source information and then creates or updates a data source definition file. For invocation and syntax information about dsdef, see Instructions for Invoking dsdef.
Note: The data source definition file should only be modified by the Webmaster. The file could be corrupted if it is simultaneously modified by multiple people.
dsdef prompts for information about data sources, SAS data libraries,
and SAS/SHARE servers.
If the data source, library, or server that you specify was defined
previously, dsdef puts the existing attribute values in square brackets
([]
) next to the prompts for new values. You can accept the existing value
by not entering a new value and pressing the
Enter key.
The following dialog is generated by dsdef. To get more information about each step, select the number that precedes the prompt.
Note: User input is indicated by bold print.
1 SystemPrompt> dsdef<return>
Configure data sources for htmSQL ================================= Use this program to create or modify the definition of one or more data sources for htmSQL. A data source specifies exactly one SAS/SHARE server and may also specify one or more SAS data libraries or an external DBMS to be accessed through the server. Data source names can be any length and can contain any character except a double quote ("). They are case sensitive and must be entered in an htmSQL input file exactly as they are defined. In the dialog that follows, default or previously specified values are shown in square brackets ([]); to accept such a value, press return or enter. The only required values in a data source definition are the data source name and server name. You can omit all other values by press return or enter when you are prompted for them. When you have finished defining data sources, you can save your changes by pressing return or enter at the 'Enter a Data Source Name' prompt. You can cancel your changes by entering a 'c' instead. 2 Enter a Data Source Name to configure: datasrc1<return>
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The following steps explain the information that you must provide to the dsdef program.
At the system command line prompt, enter
dsdef
. If you want to save your data source definition
file in a directory other than the default directory,
you must specify the -config
option and the pathname for
the file. The following example illustrates this:
dsdef -config c:\htmSQL\mydata.dsf
If -config
is not specified, the definition is written
to a default pathname. If the
definition file already exists, it is updated; otherwise, it is
created.
Note: To end the program, enter c
to cancel without
saving or press the Enter key
to save your data source information and
then end the program. Depending on where you are in the program, you
may need to press the Enter key more than
once to completely exit the program.
At the Enter a Data Source Name to configure:
prompt, enter the name of your data source. This is the value you
specify for the datasrc=
parameter of
the {query}
or
{update}
directive that you specify in
your htmSQL input (.hsql) file.
A data source name can be of any
length and can contain any character (including blank spaces) except for
the following characters: []{}()"?*=!@,:;
. Use a name that
you can remember and type accurately.
Note that case is significant in data source names.
At the Description ():
prompt, enter a
description of the data source. This value is optional.
The description can be up to 1024 characters long.
At the SAS/SHARE server name
(host.service):
prompt, enter the name of the
SAS/SHARE server for this data source.
Specify a two-part name (host.service or
host.port), where
Note: If you use a port number to identify a SAS/SHARE server, then you do not need to modify the SERVICES file on the Web server machine.
This two-part name is the same name that you specify in a LIBNAME or PROC SQL CONNECT TO statement in a SAS program.
At the
Require SAS SQL processor to undo partial updates? (usually NO):
prompt, specify
the setting for the UNDO_POLICY option of the SAS SQL processor.
The following values are valid:
n
, N
, no
, or NO
(default value)
resets the UNDO_POLICY to NONE. NONE specifies that if the UPDATE or INSERT of a row fails, then any rows that were updated or inserted by that SQL statement (before the failure) remain inserted or updated.
y
, Y
, yes
, or YES
retains the default value (REQUIRED) of UNDO_POLICY. REQUIRED specifies that if the UPDATE or INSERT of a row fails, then any rows that were updated or inserted by that SQL statement (before the failure) are undone.
At the
DBMS to pass SQL to (omit for SAS data):
prompt, if your
data is in an external DBMS, specify the SAS/ACCESS engine for the DBMS.
Example values are DB2
, ORACLE
, and
SQLDS
. If your data is in a SAS library, do not specify a
value.
At the
Options to pass when connecting to DBMS:
prompt, enter any
options that are required for connecting to the external DBMS.
The exact options that are available and the exact option names depend
on the DBMS that you specify for step 6 and for the
SAS/ACCESS view engine for that DBMS. The connection options correspond
to the DBMS arguments that are documented in the
SQL Procedure Pass-Through facility's
documentation for that SAS/ACCESS view engine. Example values are
USERID=userid
and
PASSWORD=password
, where
userid
and password
are
the user ID and password for the DBMS.
At the
SAS/SHARE server host IP name (fully qualified) or address [node1]:
prompt, enter the server's nodename.
If you do not enter a nodename, this value defaults to the nodename
that you specified in step 4 (in this example,
node1
is the default value). In a complex environment, you may
need to specify a fully qualified domain address for the server such as
server1.unx.sas.com
.
At the
User ID for SAS/SHARE server host:
prompt, enter
a user ID for the system that the server runs on. This is an optional
value that you specify if the server is running in secured mode;
otherwise, the value is ignored.
If you omit the user ID from the
data source definition, the htmSQL programmer must
specify the user ID in the htmSQL input file
by using the userid=
parameter of the
{query}
or
{update}
directive.
At the
Password for specified user ID:
prompt, enter
the password for the user ID that you specified in step 9.
This is an optional
value that you specify if the server is running in secured mode;
otherwise, the value is ignored.
If the server is running in secured mode and
you omit the password from the
data source definition, the htmSQL programmer must
specify the password in the htmSQL input file
by using the password=
parameter of the
{query}
or
{update}
directive.
At the
SAS/SHARE server user access password:
prompt, enter
the server access password for users. This is an optional value.
This must be the same password that is specified in
the UAPW= option of the SERVER procedure that was used to define the SAS/SHARE server. You must specify a password if user access to the server is password protected.
the SAPW= option of the LIBNAME statement and the SQL procedure's CONNECT TO statement.
If the SAS library
that contains your data is not predefined to the SAS/SHARE server,
then at the
Enter a library in data source "datasrc1" to configure:
prompt, enter a libref for the library.
htmSQL programmers use this libref as the high-level qualifier for the
table names in the SQL queries and statements that their applications
send to the SAS/SHARE server. Steps 13 through 16
request additional information about this library.
The library name can be up to eight characters long. The first character must be a letter or an underscore. Subsequent characters can be letters, numeric digits, or underscores. Blanks and special characters are not allowed.
At the Description ():
prompt, enter a description
of the library. This value is optional.
The description can be up to 1024 characters long.
At the Library path name:
prompt, enter the physical
name of the library. This must include a valid pathname for the
operating system in which your server library is stored.
At the
SAS engine the SAS/SHARE server should use:
prompt, specify the SAS engine
that is required for writing to and reading from this server library.
This option is required only if you do not want the SAS/SHARE server to use
the engine that the server selects by default.
For information about other engines, see the
description of the LIBNAME statement in the SAS companion for the
operating system in which your server library is stored.
At the
Options (only ACCESS=READONLY and SLIBREF=server-libref supported):
prompt, specify one or both of the
following values (these values are optional):
SLIBREF=server-libref
ACCESS=READONLY
At the
Enter a library in data source "datasrc1" to configure:
prompt,
you can either enter the name of another server library or
you can press the Enter key if you do not
want to add any more libraries to this data source.
Note: If you do specify another library, dsdef takes you through steps 13 through 16 for that library. If you do not specify another library, dsdef proceeds to step 18.
At the Enter a Data Source Name to configure:
prompt,
you can either enter the name of another data source or
you can press the Enter key if you do not want
to add any more data sources.
Note: If you do specify another data source, dsdef takes you through steps 3 through 7 for that data source. If you do not specify another data source, the dsdef program ends.
If in step 4 you
specify a SAS/SHARE server that is already defined for the data source,
dsdef prompts to see if you want to update the server configuration
information. You can either enter yes
or press the
Enter key for no.
Note: If you do specify yes
, dsdef takes you
through steps 8 through 11
so you can update the information for that server. Otherwise,
dsdef proceeds to step 12.
SAS/IntrNet 9.1: htmSQL |