Semantic MediaWiki/data

Tables
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schema version 3
These are present in SMW version 1.9 alpha:
 * /smw_di_blob
 * /smw_di_bool
 * /smw_di_coords
 * /smw_di_number
 * /smw_di_time
 * /smw_di_url
 * /smw_di_wikipage
 * /smw_fpt_ask
 * /smw_fpt_askde
 * /smw_fpt_askfo
 * /smw_fpt_asksi
 * /smw_fpt_askst
 * /smw_fpt_cdat
 * /smw_fpt_conc
 * /smw_fpt_conv
 * /smw_fpt_impo
 * /smw_fpt_inst
 * /smw_fpt_ledt
 * /smw_fpt_list
 * /smw_fpt_mdat
 * /smw_fpt_newp
 * /smw_fpt_pval
 * /smw_fpt_redi
 * /smw_fpt_serv
 * /smw_fpt_sf_af
 * /smw_fpt_sf_df
 * /smw_fpt_sobj
 * /smw_fpt_subc
 * /smw_fpt_subp
 * /smw_fpt_type
 * /smw_fpt_unit
 * /smw_fpt_uri
 * /smw_object_ids
 * /smw_prop_stats
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schema version 2
These were present in SMW version 1.7, and may also be valid for 1.8 (but not 1.9):
 * /smw_atts2: relationships where the value is numerically/logically significant, or a "string" (non-page type)
 * /smw_conc2: not sure; probably concepts
 * /smw_conccache: not sure; presumably a cache for concepts
 * /smw_ids: assigns IDs to all properties, and values that map to a (potential) wiki page
 * /smw_inst2: not sure
 * /smw_redi2: not sure; redirects?
 * /smw_rels2: relationships where the value refers to a (potential) wiki page
 * /smw_spec2: URLs to SWiVT specs
 * /smw_subp2: not sure; sub-property map?
 * /smw_subs2: not sure; looks like a mapping of categories to sub-categories
 * /smw_text2: relationships where the value is a long text/data blob

Core tables are boldfaced; the others seem to be primarily for optimization or auxiliary purposes.

Explanations

 * Semantic relationships are defined in /smw rels2, /smw_text2, and /smw_atts2.
 * Correspondence between SMW entities (property names and some property values) and MediaWiki pages is defined in /smw_ids
 * Presumably the type of storage can be determined by looking up the SMW ID in /smw_spec2, making it unnecessary to check multiple tables (rels2, text2, atts2) for each property. but it does not seem to have been designed for this purpose.
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