Logical_ concept,Logical_data_ type,Column_name,Column_Datatype,Column_Length,Column_Description
Features,GIS key,FeatureGIS,nvarchar,50,Site Code and context combined to provide a single key for the GIS. Feature = the defined extent of an archaeological feature. This field can be used for spatial querying and phase plan production across multiple site codes and context ranges
Deposits,,Sitecode,nvarchar,24,An identifier for each site that is usually assigned by an organisation external to the archaeological contractor
Features,Is a context number,Feature,int,4,Context numbers referring to any type of archaeological class:Here the number refers to an archaeological feature
Features,Is phasing information,Landscape,nvarchar,100,Gives the phase in which the feature is considered to have been constructed although that decision may be based purely on destruction evidence. The value is constructed from a three figure number and then a text description so that the values can be sorted in chronological order
Features,Is phasing information,LandNo,int,4,A numeric value that allows retrieval of multiple phases using a between ... and statement. This number should increase towards the present day as a phase is determined to be more recent
Features,Is a context type,FeatureType,nvarchar,30,"Indicates how the feature has been defined. If the value is SG it is a Stratigraphic group as defined by field staff and will have a stratigraphic group context sheet in the paper archive. If the value is Feature, then the feature will have been implied by the recording of the intervention and the paper archive will contain  a context sheet. Typically ditches with multiple interventions have the value SG and typically post-holes and the like will have the value Feature"
Features,Is a context interpretation,FeatureInterpretation,nvarchar,100,The interpretative keyword summarising the nature of the feature as defined by excavation. This is the definitive interpretation of the feature as opposed to the initial interpretation assigned on site and therefore overrides InterventionInterpretation where different from InterventionInterpretation
Interventions,GIS key,InterventionGIS,nvarchar,50,Site Code and context combined to provide a single key for the GIS. This can be used for spatially querying finds distributions (finds come from deposits which lie in interventions) across multiple site codes and context ranges
Interventions,Is a context number,InterventionNumber,int,4,Context numbers referring to any type of archaeological class: here the number refers to archaeology that should appear on the site plan: an intervention. Interventions are typically equivalent to the excavated portions of archaeological features
Interventions,Management summary,ExcavationStage,nvarchar,10,An optional entry to permit staged management of an excavation. All deposits excavated in an intervention will have the same ExcavationStage value Not heavily used at Stansted
Interventions,Is a context type,InterventionType,nvarchar,30,"The archaeological class to which the context number applies. For an intervention this will typically include the categories Cut, Layer, Masonry which should appear on the site plan. It should not include Fill or SGDeposit"
Interventions,Is a context interpretation,InterventionInterpretation,nvarchar,100,"The interpretative keyword summarising the nature of the context excavated. For an intervention this may differ from the interpretation assigned to a feature, if the interpretation has been reclassified either on site or in post-excavation in cases where multiple interventions were excavated"
Deposits,Is a context number,Deposit,int,4,Context numbers referring to any type of archaeological class: here the number refers to any context which might contain finds or samples
Deposits,Stratigraphic position,Rank,int,4,"The rank of the deposit within an intervention, starting at 1 or sometimes 0 for the basal fills. All numbers with the same vertical matrix position have the same rank. This can be used to sort deposits from top to bottom within an intervention. To sort Stratigraphic Groups within a feature use SGRank"
Deposits,Is a context type,DepositType,nvarchar,30,"The archaeological class to which the context number applies. For a deposit this will typically include the values Fill, Layer, Masonry"
Deposits,Is a context interpretation,DepositInterpretation,nvarchar,100,The interpretative keyword summarising the nature of the excavated deposit
Stratigraphic Group Deposits,Is a context number,StratigraphicGroup,int,4,Context numbers referring to any type of archaeological class: contexts assigned by site staff are unique in sequence within a site code
Stratigraphic Group Deposits,Stratigraphic position,SGRank,int,4,"The rank of the stratigraphic group within a feature, starting at 1 or sometimes 0 for the basal fills. All numbers with the same vertical matrix position have the same rank. This can be used to sort stratigraphic groups from top to bottom within a feature. To sort deposits within an intervention use Rank"
Stratigraphic Group Deposits,Is a context type,SGType,nvarchar,30,"Indicates how the Stratigraphic Group deposit has been defined. If the value is SG it is a Stratigraphic group as defined by field staff and will have a stratigraphic group context sheet in the paper archive. If the value is the same as the value in DepositType, then the Stratigraphic Group will have been implied by the recording of the deposit and the paper archive will contain  a context sheet. Typically ditches with multiple interventions and deposits representing the same deposition event will have the value SG and typically post-hole fills and the like will have the value Fill (or layer, masonry)"
Stratigraphic Group Deposits,Is a context interpretation,SGInterpretation,nvarchar,100,The interpretative keyword summarising the nature of the stratigraphic group deposit excavated. Where different from DepositInterpretation this overrides DepositInterpretation
Stratigraphic Group Deposits,Is phasing information,FromLand,nvarchar,100,"Gives the phase in which the stratigraphic group deposit is considered to have been deposited and depending on the nature of the deposition event may give a construction, use or destruction phase. The value is constructed from a three figure number and then a text description so that the values can be sorted in chronological order"
Stratigraphic Group Deposits,Is phasing information,FromLandNo,int,4,A numeric value that allows retrieval of multiple phases using a between ... and statement. This number should increase towards the present day as a phase is determined to be more recent
Stratigraphic Group Deposits,Soil formation category,Formation,nvarchar,10,A code describing the depositional processes that are considered to have created the stratigraphic group deposit.