Graves
BIAD defines a grave as the immediate context in which human remains are found. A grave may contain one or more human individuals. 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
notes	varchar
PhaseID	varchar	Please see the detailed description of the 'Phases' table.