Graves
Each grave must be assigned to a single phase. A grave may contain many GraveIndividuals. Grave construction is separated into three components: VisibleComponent, SoilExcavationType, and Construction. In each case, 'None' is clear evidence of absence, rather than NULL which is unknown.
Column name	Data type	Column description
CitationID	varchar
GraveDepth	decimal	Depth in cm
GraveID	varchar
GraveName	varchar	Not a unique field. For example, many phases may contain the name 'Grave 1')
HumanMNI	smallint	Minimum number of human individuals
ItemID	varchar	Use SiteID as prefix, and suffix with a number starting at 101.
notes	varchar
PhaseID	varchar	Please see the detailed description of the 'Phases' table.