Database Methods

version 6.0

Database methods are methods that are automatically executed by 4th Dimension when a general session event occurs.

To create or open and edit a database method:

1. Open the Explorer window.

2. Select the Methods tab.

3. Expand the Database Methods theme.

4. Double click on the method.

or:

1. Select the method.

2. Click Edit or press Enter or Return.

You edit a database method in the same way as any other method.

You cannot call a database method from another method. Database methods are automatically invoked by 4th Dimension at certain points in a working session. The following table summarizes execution of database methods:

Database Method	4th Dimension	4D Server	4D Client
On Startup	Yes, Once	No	Yes, Once
On Exit	Yes, Once	No	Yes, Once
On Web Authentication	Yes, Multiple	Yes, Multiple	No
On Web Connection	Yes, Multiple	Yes, Multiple	No
On Server Startup	No	Yes, Once	No
On Server Shutdown	No	Yes, Once	No
On Server Open Connection	No	Yes, Multiple	No
On Server Close Connection	No	Yes, Multiple	No

For detailed information about each of the database methods, see the following sections:

• On Startup Database Method

• On Exit Database Method

• On Web Authentication Database Method

• On Web Connection Database Method

• On Server Startup Database Method (4D Server Reference manual)

• On Server Shutdown Database Method (4D Server Reference manual)

• On Server Open Connection Database Method (4D Server Reference manual)

• On Server Close Connection Database Method (4D Server Reference manual)

Methods.