The DirectConnect for z/OS Option TRS is also important for accessing mainframe data using RPCs. The following TRS features are available to the three-tier user and unavailable in a two-tier environment:
IMS and z/OS access – IMS and z/OS data are available to LAN clients in a three-tier environment.
Transaction mapping by security definition – transactions can be mapped from LAN client to mainframe by the security definition.
Transaction mapping by user ID – transactions can be mapped from LAN client to mainframe by the user ID of the client.
Security – TRS security features can be configured to require client identification and restrict access to mainframe connections and transactions.
Support for DB2 stored procedures – using the DB2 UDB Option for CICS, client applications can invoke a DB2 stored procedure as a Server Option remote procedure call (RPC). Client applications can connect to the DB2 UDB Option for CICS directly or through TRS.
For more information on TRS, see the Mainframe Connect DirectConnect for z/OS Option User's Guide for Transaction Router Services.
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