In Teradata PT, data streams (or buffers in memory that temporarily hold data) enable the passing of data between operators without intermediate storage. Data streams allow Teradata PT to automate parallelism and scalability.
A Teradata PT job moves data from the sources to the targets through data streams. Data moves from producer operator(s) through the data streams to consumer operator(s):
In all cases, the data flows through the data streams as shown in Figure 7.Figure 7: Data Streams