DDL Gateway
The DDL Gateway consists of one client, one server, and one or more integrity server processes that keep the metadata in the MDS repository synchronized with Teradata. MDS can track changes to multiple Teradata systems. The DDL Gateway is also responsible for maintaining the audit trail of the DIM changes for each processed DDL statement. If the Audit Log Flag is set to “On”, an entry is inserted into the audit trail for each update to the DIM.
The DDL Gateway can be installed on an application node of the Teradata system or on a separate Windows or Linux box. Only one instance of the DDL Gateway is allowed.