step by step tutorial of a typical simple ETL process.</p><ul><li>Unzip files with the name pattern <code>*.zip</code></li><li>Parse csv files with the name pattern <code>*.csv</code> from zip files</li><li>Feed a table <code>Person</code> with the list of people from files</li><li>Exclude duplicates</li><li>Insert if the email is not found, update otherwise</li><li>We won&#x27;t use extensions for Entity Framework here but with extensions that directly deal with Sql Server</li></ul><p>Csv files in zip file