what is the difference between <pubDate> and <dc:date> in feed's structure

Question

can any one please let me know the main difference between <pubDate> and <dc:date> in feed's structure. also please explain

<dc:date>
<dc:creator>
<dc:....>
<dc:....>

will those be required for building feeds?

Answer 1

According to this page:

So, let me get this straight. RFC2822 is the format used by the pubDate element in RSS 2.0, and looks like this: Fri, 21 Nov 1997 09:55:06 -0600

ISO8601 is used in the dc:date element in RSS 1.0 (and sometimes RSS 2.0) and looks like this: 1998-05-12T14:15:00

The difference is in the format. Both define the same thing.

This post has an explanation of the <dc:creator> tag and how it differs from the <author> tag:

Therefore, if you are only using the name of the author in an RSS item make sure to use the tag and not the tag

The RSS standard is flexible enough for you to miss out some information, but some readers might object if there is, say, a date missing which is useful for ordering the items. Personally, I'd include the date and author and be consistent about which form I used.