312 Introduction to the New Mainframe: z/VSE Basics
DB2 Server for VSE users can connect to the application server in the following
environments:
CICS online environment
In a CICS online environment, online users can connect to the application
server implicitly and explicitly. If online users do not explicitly issue a
CONNECT statement specifying the authorization ID and the password, then
the first time they try to process an SQL statement, the CICS user is
connected to the default application server implicitly.
Batch/interactive environment
In a VSE batch or VSE/ICCF environment, an explicit CONNECT must be the
first statement entered by the batch user to access the application server.
ISQL environment
When CICS users start ISQL, they are ...