Extract-Load-Transform (ELT) Process Runtime Analysis and Optimization

2023 5th International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE) Pub Date : 2023-03-16 DOI:10.1109/REEPE57272.2023.10086728

A. E. Zvonarev, D.S. Gudilin, Dmitriy A. Lychagin, B. Goryachkin

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Abstract

The article discusses algorithms for optimizing the transformation stage of the ELT process, built on the basis of procedures in the PostgreSQL DBMS and the parallelization mechanism implemented by the Python programming language tools. As a basis for comparison, the most trivial version of the data conversion process was taken, which consists in a sequential connection of each individual procedure. The first proposed algorithm uses the principle of the simplest parallelization of procedures, which allows you to perform independent procedures in parallel. The second algorithm is an improved version of the first one. It uses the principle of step-by-step optimization with additional parallelization of chain blocks of dependent procedures. As the main criterion for evaluation, the time of execution of the entire chain of procedures was taken. As a result of the study, it was determined that the improved version of the procedure parallelization algorithm shows the shortest execution time of the entire chain of the data transformation step.

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提取-负载-转换(ELT)过程运行时分析与优化

本文以PostgreSQL数据库中的过程和Python编程语言工具实现的并行化机制为基础，讨论了ELT过程转换阶段的优化算法。作为比较的基础，采用了数据转换过程的最简单版本，它由每个单独过程的顺序连接组成。第一个提出的算法使用最简单的过程并行化原则，它允许您并行地执行独立的过程。第二种算法是第一种算法的改进版本。它使用逐步优化的原则，并对依赖过程的链块进行额外的并行化。以整个流程链的执行时间作为评价的主要标准。研究结果表明，改进版本的过程并行化算法在数据转换步骤的整个链中执行时间最短。

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2023 5th International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)

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