Chapter 15: Problem 8

What is the difference between pipelining and materialization?

Short Answer

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Pipelining is a technique in computing where tasks are arranged in stages, and each stage processes the output of the preceding stage without temporary data storage. Materialization, on the other hand, is a process where intermediary results are temporarily stored for subsequent execution. The main difference thus lies in how the data is handled during operations.

Step by step solution

Understanding Pipelining

Pipelining is a process in computing where several stages are arranged so that each stage processes the output of the preceding stage. This means, execution of optimizer operations happens simultaneously without temporary storing of data between transformations.

Understanding Materialization

Materialization is a process where intermediary results are temporarily stored to allow further operations execution. In contrast to pipelining, materialization means that all the data after a step is computed and quite literally 'materialized' into temporary storage, before the next step begins.

Difference between Pipelining and Materialization

The key difference between Pipelining and Materialization lies in the execution of the tasks. In Pipelining, data moves through the transformations and is not stored temporarily between transformations according to the pipeline design, allow every step of the sequence to execute simultaneously. Whereas, in Materialization, data is temporarily stored after each transformation, meaning each step in a sequence of transformations cannot start executing until every single row of the previous step has been computed and stored temporarily.

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What is the difference between pipelining and materialization?

Short Answer

Step by step solution

Understanding Pipelining

Understanding Materialization

Difference between Pipelining and Materialization

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