What are No Frames in HTML? in terms of SEO?

[javed]

No frames. They are the enemies of Search Engines and Search Engines are Enemies of Frames.
I am asking for "No Frames" not about Frames.

[Mohd Azharuddin]

Frames is technique used in earlier days in web designing, in which we can display 2 different pages together using the frame tag. For example in the source i have attached a site done in frames which has been now changed to div tags.

The problem of frames in seo is crawler cannot index the page properly because the pages are embedded inside frames.

[Vikram]

Actually frames are not enemies of SEO, frames are use to show other web-page on a single page however in this case Crawler will crawl the frame content on its source file not on frame page.

[Nex-G]

A single web page is divided into parts using HTML frame set. And search engine treats every part as a single page therefore this technique looks spammy in eyes of Search Engine.