Columns
| Column | Type | Size | Nulls | Auto | Default | Children | Parents | Comments | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| chroncontroltypeid | serial | 10 | √ | nextval('ndb.seq_chroncontroltypes_chroncontroltypeid'::regclass) |
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An arbitrary Chronology Control Type identification number. |
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| chroncontroltype | varchar | 64 | √ | null |
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The Chronology Control Type. Chronology Controls include such geophysical controls as radiocarbon dates, calibrated radiocarbon dates, averages of several radiocarbon dates, potassium-argon dates, and thermoluminescence dates, as well as biostratigraphic controls, sediment stratigraphic controls, volcanic tephras, archaeological cultural associations, and any other types of age controls. |
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| higherchroncontroltypeid | int4 | 10 | √ | null |
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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) |
|---|---|---|---|
| chroncontroltypes_pkey | Primary key | Asc | chroncontroltypeid |