The structure of a URL can play a major role in the overall indexing rate and search engine result for that particular URL.
What should a good URL include?
1-Direct Target. A good URL contains a direct target. A direct pointed URL will not confuse the average user and it will also not confuse search engines. If necessary, use dashes to divide the words from one another.
2-Keywords in URL. Make sure the URL contains some of the most important keywords that are relevant to what the linked page is about.
3- Minimal Sub Category. Never create too many categories always go for 1 to 3 sub categories per link.