Manage Function-String Classes

Managing function-string classes includes creating, assigning, and dropping function-string classes.

When you create or customize a function string, you specify which class it belongs to. If you want to create and use customized function strings, you can:

Create a derived function-string class that inherits function strings from rs_default_function_class, rs_db2_function_class, or another parent class. Then, in the derived class, create only the function strings that you are interested in overriding.

Note: You cannot alter, add to, delete, or change any of the function-string classes for non-Sybase data servers.
Create a new function-string class and create function strings for all functions.
Customize function strings in rs_sqlserver_function_class.

Before you create customized function strings, you should decide in advance which of these approaches to take and set up your classes accordingly. Generally, it is preferable to customize function strings in derived classes rather than to customize function strings in the class rs_sqlserver_function_class. You must be using Replication Server version 11.5 or later in order to create and deploy a derived function-string class that inherits function strings from other classes.

Creating a Function-String Class
If function strings in an existing class do not serve your needs for particular database connections, and customizing function strings in an existing class is not feasible, you can create a new class in which to create the function strings you need.
Assign a Function-String Class to a Database
You can assign a function-string class to a database connection in Sybase Central or with the create connection or alter connection commands, executed in the Replication Server that manages the database.
Drop a Function-String Class
Use the drop function string class command to drop a function-string class that you created, from the replication system, if you are sure that you will not need the function-string class again.

Parent topic: Customize Database Operations

Related concepts

Manage Function Strings