Metadata - Parallel Transporter

Metadata

Teradata PT metadata describes the characteristics of data and processing objects, such as:

Data sources and targets

Table, column, and file formats

Operators

These descriptions provide the basis for all Teradata PT operations, as shown in Table 2.

Table 2: Metadata Use 

Metadata Type	Purpose
Attributes of data sources and targets	Determines the fastest access path for the Parallel Execution Plan
Table and column definitions	Transforms, filters, or cleanses data

Teradata PT components, in effect, are metadata driven, as they are created, optimized, and executed based on guidance derived from the metadata definitions.