iX V6.5 (30391-90011)

Chapter 9 461

Using a Remote Database

Access Through a Local Application Program

To use this method you must issue a REMOTE HELLO command (either with the DSLINE

parameter or issue the DSLINE as a separate command) and a FILE equation by calling

the COMMAND intrinsic for each of these commands. Use of the COMMAND intrinsic is

explained in the MPE/iX Intrinsics Reference Manual, and information about accessing

remote ﬁles is given in the NS3000/XL User/Programmer Reference Manual. Figure 9-3.

contains a diagram of method 2.

Figure 9-3. Using Method 2

If you want to access more than one remotely located database with an application

program, you must enter one FILE equation for each remote database.

To terminate execution perform the following steps:

1. Close the database.

2. Log off (REMOTE BYE).

3. Close the communication line.

Method 3--Using a Database-Access File

The third method involves creating a special privileged (PRIV) ﬁle which is called the

database-access ﬁle (DBA ﬁle). This ﬁle provides TurboIMAGE/XL with the necessary

information to establish a communications link and a remote session. It also speciﬁes the

remote database or database-access ﬁle name so that the necessary TurboIMAGE/XL

intrinsics can be executed on the remote computer. Figure 9-4. illustrates method 3.