ETL Process and Data Migration Strategies

This document is a technical report that outlines the processes and methodologies utilized by WaveAccess in managing ETL (Extract, Transform, Load) processes and data migrations. It describes the initial steps involved in stabilizing existing ETL pipelines through reverse engineering and the extraction of use cases, which are then validated by the QA team using data sets. The report details the common tasks performed by the WaveAccess team, including support for existing ETL processes, data migration to new formats, and optimization of storage performance. It explains the two primary approaches to data migration: using SQL procedures for flexibility and speed or implementing custom ETL code for compatibility with different storage solutions. Additionally, the document addresses potential performance issues in legacy ETL pipelines and the strategies employed by WaveAccess to identify and resolve these issues, ensuring that clients receive a well-documented and efficient data pipeline at the conclusion of their projects.