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    <lastBuildDate>Fri, 19 May 2023 08:00:00 +0530</lastBuildDate><atom:link href="/tags/database/index.xml" rel="self" type="application/rss+xml" />
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      <title>Advanced PostgreSQL Interview Questions for Senior Developers</title>
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      <pubDate>Fri, 19 May 2023 08:00:00 +0530</pubDate>
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      <description><![CDATA[<h2 id="advanced-postgresql-interview-questions-for-senior-developers" data-numberify>Advanced PostgreSQL Interview Questions for Senior Developers<a class="anchor ms-1" href="#advanced-postgresql-interview-questions-for-senior-developers"></a></h2>

<h2 id="core-sql--data-modeling" data-numberify>Core SQL & Data Modeling<a class="anchor ms-1" href="#core-sql--data-modeling"></a></h2>

<h3 id="q1-what-is-the-difference-between-delete-truncate-and-drop" data-numberify>Q1: What is the difference between DELETE, TRUNCATE, and DROP?<a class="anchor ms-1" href="#q1-what-is-the-difference-between-delete-truncate-and-drop"></a></h3>
<p><strong>Business Use Case:</strong> &ldquo;For our testing environment, we need to clear out all claim data from a table at the end of each test run. Which command is the most efficient for this, and why?&rdquo;</p>
<p><strong>Answer:</strong> &ldquo;These three commands are used to remove data, but they work very differently.</p>]]></description>
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