CREATE CONNECTION

CREATE CONNECTION

Class

Data Connectivity

Purpose

Create a gateway connection file

Syntax

CREATE CONNECTION <filename> | (<expC1>) | ?

[DATASOURCE <cNode> [USERID <cUser>] [PASSWORD <cPass>] [DATABASE <cDatabase>]]

| [CONNSTRING <cConnstring>]

| [AS <cKeyPairString>]

See Also

DROP CONNECTION, REMOTE DATA CONNECTIVITY FUNCTIONS

Description

The CREATE CONNECTION command is used to create a gateway connection file to an external SQL database. The connection file can be used by the SQLCONNECT() and SQLSTRINGCONNECT() remote data connectivity functions to establish a connection for SQL access to the database.

Keywords	Description
filename	The name of the gateway connection. If no file extension is specified, then .gtw is used.
(<expC>)	A character expression, enclosed in round brackets, that returns a valid filename for the gateway connection.
?	Displays a Select a File dialog allowing an existing connection file to be selected and modified. This is only applicable for Recital Terminal Developer.

If the optional clauses are not specified, the CREATE GATEWAY worksurface provides a full screen facility for gateway connection file creation in Recital Terminal Developer. The following elements can be defined for the gateway connection:

Server Element	Description
Name	The remote database server name, e.g. RECITAL
Network Node Name	The node name or IP address of the server
Protocol Type	The connection protocol, TCP/IP
Login Username	The login for the database server
Login Password	The login password for the database server
Database Name	The full name (including path if applicable) of the database

Information relating to individual tables is not required and is relevant only when gateway files are being used within the Recital forms system rather than with the remote data connectivity functions via cursor access.

Server Element	Description
Table Name	The table name from the database
Table Primary Key	The primary index key for the table
Table Restriction	An optional SQL SELECT…WHERE clause

Client Element	Description
Structure Name	The name of the matching Recital structure table
Alias Name	The alias name for the client table
Default Form Name	The default screen form to be used

The connection details can be supplied using the DATASOURCE or CONNSTRING clauses:

Keyword	Description
DATASOURCE <cNode>	Specify the node name or IP address of the server
USERID <cUser>	Specify the login for the database server
PASSWORD <cPass>	Specify the login password for the database server
DATABASE <cDatabase>	Specify the name of the database
CONNSTRING <cConnstring>	Specify an ODBC connection string

The remote database server name defaults to RECITAL.

The AS <cKeyPairString> is defined using the following key pairs:

Key Pair	Description
TYPE=<cType>	Specify the connection type: ODBC, JDBC, OLEDB, ORACLE, INGRES, MYSQL, POSTRGRESQL, RECITAL
NODE=<cNode>	Specify the node name or IP address of the server
USERID=<cUser>	Specify the login for the database server
PASSWORD=<cPass>	Specify the login password for the database server
DATABASE=<cDatabase>	Specify the name of the database
CONNECTION=<cConnstring>	Specify an ODBC, JDBC or OLEDB connection string
TABLE=<cTable>	Specify the database table name
PRIMARYKEY=<cKey>	Specify the primary key for the database table
SQLSELECT=<cSelect>	Specify an optional SQL SELECT…WHERE clause

Each key pair is separated by a semi-colon, ';'.

Example

// config.db
set sql to vfp
set sql on
// end of config.db
 
CREATE CONNECTION conn1 DATASOURCE "server1" USERID "user1";
PASSWORD "pass1" DATABASE "/usr/recital/data/demo"
nStatHand = SQLCONNECT("conn1.gtw")
if nStatHand < 1
dialog box [Could not connect]
else
nTabEnd = SQLTABLES(nStatHand)
if nTabEnd = 1
select sqlresult
browse
endif
SQLDISCONNECT(nStatHand)
endif

Products

Recital Database Server, Recital Mirage Server, Recital Terminal Developer