Introduction to Teradata Sparse Maps The Teradata hashing architecture and how AMPs are used to split tables for maximum parallelism evenly have been unchanged since the beginning. What is new is the ability to create your hash maps. Hash maps, as we usually know them, are also called contiguous maps. If you are not familiar …
BLC, Row Level Partitioning, and Datablock Size Tuning In this article, we will learn how block-level compression, row-level partitioning, and selection of the appropriate data block size can be used to influence the Teradata table size and, thus, performance. We will create a test scenario based on a customer master table loaded daily. We will …
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