Sybase provides a set of user defined datatypes and datatype classes. You can use them to change the datatype of column values when you replicate between:
A datatype definition describes a non-Sybase datatype in terms of a base Replication Server native datatype. The base datatype determines the maximum and minimum length associated with the datatype definition and provides defaults for other datatype attributes. The base datatype also defines the delimiters associated with the datatype definition.
For a list and description of supported datatype definitions for each datatype class, see the Replication Server Heterogeneous Replication Guide.