DB2 Connect Version 10.5 for Linux, UNIX, and Windows
DB2 Connect Version 10.5 for Linux, UNIX, and Windows
A host database is a relational database system from which a link request originates.
A DB2 for z/OS location is the unique name of a database server. An application uses the location name to access a DB2 for z/OS subsystem or a DB2 for z/OS data sharing group. A data sharing group enables applications on different DB2 subsystems to read from and write to the same data concurrently. The application uses a DB2 data sharing group network address to access a DB2 data sharing location. The accessed DB2 subsystem is transparent to the application.
Since DB2 for z/OS supports multiple databases at the same DB2 location, the location name is analogous to a Linux, UNIX, and Windows database alias name. A database alias can be used to override the location or location alias name when accessing a location. A location alias is another name for a location. It is used to control which subsystems in a data sharing group are accessed by an application.
LOCATION NAME is also defined in the Boot Strap Data Set (BSDS) as well as the DSNL004I message (LOCATION=location), which is written when the Distributed Data Facility (DDF) is started. LOCATION NAME supports up to 8 alias location names, allowing applications the ability to use different dbalias names to access a Version 8 z/OS server.