PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Microsoft SQL Server???2000 defaults to NOT NULL. For ANSI compatibility, setting the database option ANSI_NULL_DEFAULT to ON changes the database default to NULL. When this option is set to ON, all user-defined data types or columns that are not explicitly defined as NOT NULL during a CREATE TABLE or ALTER TABLE statement default to allowing null values.
http://www.w3.org/ns/prov#wasQuotedFrom
  • microsoft.com