About: http://webisa.webdatacommons.org/398033978

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	So in creating a global temporary table from the data in the table on which we are gathering statistics, someone decided that there was a justification to create constraints (i.e. NOT NULL) on data which did not require validation.
http://www.w3.org/ns/prov#wasQuotedFrom	evdbt.com