Attached below is the screenshot and code that I have used:
driver.switchTo().frame(driver.findElement(By.xpath("//iframe[contains(@title,'Deploy Data Set')]")));
<div class="slds-template_iframe slds-card" force-aloha-page_aloha-page=""><iframe height="100%" width="100%" scrolling="yes" allowtransparency="true" id="vfFrameId_1536136086228" name="vfFrameId_1536136086228" allowfullscreen="true" force-aloha-page_aloha-page="" allow="geolocation *; microphone *; camera *" title="Deploy Data Set"></iframe></div>