Columns
| Column | Type | Size | Nulls | Auto | Default | Children | Parents | Comments | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| variableunitsid | serial | 10 | √ | nextval('ndb.seq_variableunits_variableunitsid'::regclass) |
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An arbitrary Variable Units identification number. |
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| variableunits | varchar | 64 | null |
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The units of measurement. For fauna, these are «present/absent», «NISP» (Number of Individual Specimens), and «MNI» (Minimum Number of Individuals). For pollen, these are «NISP» (pollen counts) and «percent». Units for plant macrofossils include «present/absent» and «NISP», as well as a number of quantitative concentration measurements and semi-quantitative abundance measurements such as «1-5 scale». Examples of charcoal measurement units are «fragments/ml» and «µm^2/ml». |
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| recdatecreated | timestamp | 22 | timezone('UTC'::text, now()) |
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| recdatemodified | timestamp | 22 | null |
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Indexes
| Constraint Name | Type | Sort | Column(s) |
|---|---|---|---|
| variableunits_pkey | Primary key | Asc | variableunitsid |