HDS components installed separately

To use HDS, install the following components after you have installed Replication Server version 15.0.1:

Datatype definitions

Datatype definitions assign a unique datatype ID to each datatype, and describe the attributes of each non-Sybase datatype, such as delimiters, length, scale, precision, minimum and maximum values, how it is represented using native Replication Server datatypes. Replication Server uses datatype definitions to:

Replication Server support objects

Replication Server relies on a replicate database to maintain some of the operational data that Replication Server needs to replicate to that database.

HDS accommodates the Replication Server replicate database requirements by creating two tables in the replicate database:

Replication Server function strings

Function strings allow users to customize the database operations sent by the replicate Replication Server to the replicate database. HDS uses function strings to replace invocations of stored procedures and certain database commands that the replicate Replication Server sends to the replicate database.

The function strings required to support HDS are installed in the RSSD of the replicate Replication Server. Sample scripts are provided for this purpose.

Class-level translations for non-Sybase datatypes

HDS provides default datatype-to-datatype mappings, called class-level translations.

HDS provides a function-string class for each supported database server. The class-level translations are specific to each function-string class that supports a non-Sybase replicate database.