Columns
Column | Type | Size | Nulls | Auto | Default | Children | Parents | Comments | |||
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featureprop_id | serial | 10 | √ | nextval('featureprop_featureprop_id_seq'::regclass) |
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feature_id | int4 | 10 | null |
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type_id | int4 | 10 | null |
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The name of the property/slot is a cvterm. The meaning of the property is defined in that cvterm. Certain property types will only apply to certain feature types (e.g. the anticodon property will only apply to tRNA features) ; the types here come from the sequence feature property ontology |
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value | text | 2147483647 | √ | null |
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The value of the property, represented as text. Numeric values are converted to their text representation. This is less efficient than using native database types, but is easier to query. |
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rank | int4 | 10 | 0 |
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Property-Value ordering. Any feature can have multiple values for any particular property type - these are ordered in a list using rank, counting from zero. For properties that are single-valued rather than multi-valued, the default 0 value should be used |
Indexes
Constraint Name | Type | Sort | Column(s) |
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featureprop_pkey | Primary key | Asc | featureprop_id |
featureprop_c1 | Must be unique | Asc/Asc/Asc | feature_id + type_id + rank |
featureprop_idx1 | Performance | Asc | feature_id |
featureprop_idx2 | Performance | Asc | type_id |