database - Wordpress: difference between site_id and blog_id? -

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i'm trying understanding of how wordpress works , while inspecting database found that, in multisite installation, there table called wp_site seems holding single record corresponding site_id. cannot understand (nor find on internet) use of site_id when multisites seem use wp_blogs , corresponding blog_id identifying different sites.(http://codex.wordpress.org/database_description)

can shed light on should understanding of site_id?

thanks

giuseppe

site reference network of blogs. there efforts under way allow wordpress support multiple networks in addition multiple blogs, right that's not stock feature (which why wp_site table contains 1 value.

the wp_blogs table contains of blogs entire installation, each identified site it's associated with.

this gives clean separation between networks, , (eventually) you'll able have different "groups" of blogs on 1 wordpress installation behave distinct multisite installations.


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