Airbyte is an open-source data integration engine that helps you consolidate your data in your data warehouses, lakes and databases.

Airbyte

I recently did a sample local MySQL data to BigQuery as test-run before implementing on my actual  EC2 MySQL migration project.

I'm curious to know why extra copies of data with _*airbyte_raw*_ were added in addition to the main tables from the source. What does this extra tables host?

the `_raw_tables_*` store the raw data transferred to your destination. They are important because the normalization process will run using that data and create the final tables with normalized data.

<https://docs.airbyte.io/understanding-airbyte/connections>
<https://docs.airbyte.io/understanding-airbyte/basic-normalization>

Thank you <@U01MMSDJGC9>

Does the _*raw_tables_**  form part of the cost of data storage in BigQuery like duplicated cost?_