Column_name,Column_Datatype,Column_Length,Column_Description
SiteCode,nvarchar,24,An identifier for each site that is usually assigned by an organisation external to the archaeological contractor
BagID,nvarchar,24,Number of the bag containing the sherd family: unique within the site code and prefixed with a two letter code taken from the Computer Domain (WA = Wessex and OA = Oxford) to which the user belongs
CtxtNo,int,4,Context numbers referring to any type of archaeological class: contexts assigned by site staff are unique in sequence within a site code
Specialism,nvarchar,50,The finds specialism which identified the object
ObjNo,int,4,The individual object number assigned during excavation to the find
DateKey,nvarchar,100,"The date key for the sherd family. This is constructed from the Fabric, Form and Rim component Part type to provide a key against which dating values can be assigned"
DateMin,int,4,Numeric value in years representing the start date of a typological or absolute date range applicable to objects that can or have been dated
DateMax,int,4,Numeric value in years representing the end date of a typological or absolute date range applicable to objects that can or have been dated
DateRange,nvarchar,100,Free text description of the date range described by the numeric values in DateMin and DateMax
FabricType,nvarchar,8,A code describing the fabric/ware from which the sherds making up the sherd family are fashioned. This corresponds to the published fabric codes. Some codes have an S suffixed. In matching the code to the report fabric this S should be ignored. FL26S therefore is FL26
ComponentPartDesc,nvarchar,120,Describes the component part of the vessel represented by this record
ComponentPartType,smallint,2,A detailed code value describing different forms of the component part. 
ComponentPartDesc,nvarchar,510,The description of the detailed code value in field ComponentPartType
VesselFormType,nvarchar,8,A code describing the vessel form  represented by the sherd family
VesselFormTypeDesc,nvarchar,510,Description of the vessel form as provided by the specialist
VesselFormTypeCode,nvarchar,100,Shortened code form of the VesselFormTypeDesc for use in GIS/or other analysis. Derived from the description in VesselFormTypeDesc
VesselClassDescription,nvarchar,510,Broad class of vessel to which the Vesselformtype has been assigned
SherdCount,int,4,The number of sherds represented in the record
Weight,int,4,The weight in grammes of the sherds making up the sherd family
RimPercentMin,smallint,2,An estimate of the minimum rim percentage present. Typically used for prehistoric pottery only
RimPercentMax,smallint,2,An estimate of the maximum rim percentage present. Typically used for prehistoric pottery only
RimDiameterMin,int,4,Measure of the minimum rim diameter in millimetres
RimDiameterMax,int,4,Measure of the maximum rim diameter in millimetres
EVE,decimal,5,"The estimated vessel equivalent or the RE (rim equivalent) that is determined at the time the rim is recorded. If diameter cannot be determined due to size, a small notional figure usually below 5%  is estimated"
MinVessels,smallint,2,Minimum number of vessels estimated from rims only although prehistorians use with non-rim sherds
SurfaceTreat,nvarchar,40,Description of the surface treatment applied to a vessel. Typically used only by prehistorians and usually a blank value indicates no special treatment
Manufacture,nvarchar,40,Description of the base method of manufacture. Typically used only by prehistorians.
Residue,nvarchar,80,Description of a residue. Usually a blank value indicates no residue
Repair,nvarchar,60,Description of any repairs to the vessel from which the sherd(s) are derived. Usually a blank value indicates no repair
Perforation,nvarchar,60,Description of any perforations noted on the vessel
Illustration,bit,1,Indication that the sherd(s) should be illustrated. -1 indicates it should be illustrated. 0 indicates it should not be illustrated
Condition,nvarchar,20,"An assessment of the condition of the sherd(s) using the range Good, Moderate, Poor or Very Poor"
Description,ntext,16,Free text description and or notes on the sherd family
Decoration,ntext,16,Computer - generated free text summary of the decoration recorded in a sherd family in tblPotDecoratedMotifs
ObjectID,int,4,"Unique identifier of this record in tables of data (GIS shape files, or the table FindsSummaries in the Freeviewer database) that have been derived from this specialist provided data."