Columns
| Column | Type | Size | Nulls | Auto | Default | Children | Parents | Comments | ||
|---|---|---|---|---|---|---|---|---|---|---|
| lithologyid | serial | 10 | √ | nextval('ndb.seq_lithology_lithologyid'::regclass) |
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An arbitrary identification number for a lithologic unit. |
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| collectionunitid | int4 | 10 | null |
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Collection Unit identification number. Field links to the CollectionUnits table. |
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| depthtop | float8 | 17,17 | √ | null |
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Depth of the top of the lithologic unit in cm. |
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| depthbottom | float8 | 17,17 | √ | null |
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Depth of the bottom of the lithologic unit in cm. |
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| lowerboundary | varchar | 255 | √ | null |
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| description | text | 2147483647 | √ | null |
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Description of the lithologic unit. These can be quite detailed, with Munsell color or Troels-Smith descriptions. Some examples: |
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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) |
|---|---|---|---|
| lithology_pkey | Primary key | Asc | lithologyid |
| ix_collectionunitid_lithology | Performance | Asc | collectionunitid |