Multiple Xml Sitemap
 

How to submit multiple sitemap files for a single site?

If you have many sitemaps, you can use a sitemaps index file as a way to submit them at once. The XML format of a sitemap index file is very similar to the XML format of a sitemap file. The sitemap index file uses the following XML tags:

sitemapindex - the parent tag surrounds the file.
sitemap - the parent tag for each sitemap listed in the file (a child of sitemapindex)
loc - the location of the sitemap (a child of sitemap)
lastmod - the last modified date of the sitemap (optional)

Yes, You are right. I totally agree with you.

XML sitemaps is used to increase search engine optimization and if you want something it is very useful for you

you can create multiple sitemap

If you have many sitemaps, you can use a sitemaps index file as a way to submit them at once. The XML format of a sitemap index file is very similar to the XML format of a sitemap file.
support.google.com/webmasters/answer/75712

you'll need to download the xml file, use it to create a number of smaller files, create an index file, and then reload the files.

If your website have more than 50,000 url's, you need to create a folder with sitemap.xml and insert no. of files into the the folder with names sitemap1.xml, sitemap2.xml etc...