A function-string class comprises all of the function strings used with a type of database.
Replication Server provides function-string classes for Adaptive Server and with version 15.2, Replication Server provides function-string classes for non-ASE data servers: Sybase® IQ, IBM DB2 UDB, Microsoft SQL Server, and Oracle. Although function strings may contain data-server-specific instructions, they can often be used with several databases maintained by the same data server type. You can create classes with all new function strings or create a derived class that inherits function strings from an existing parent class.