Data Item _variant.role
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General 
- Item name
- _variant.role
- Category name
- variant
- Attribute name
- role
- Required in PDB entries
- no
- Used in currrent PDB entries
- No
Item Description
The value of _variant.role specified a role
for this variant. Possible roles are null, 'preferred',
'raw data', and 'unsuccessful trial'.
A null value for _variant.role leaves the
precise role of the variant unspecified. No inference should
be made that the variant with the latest time stamp is
preferred.
Data Type 
- Data type code
- uline
- Data type detail
- char item types / multi-word items (case insensitive)...
- Primitive data type code
- uchar
- Regular expression
- [][ \t_(),.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*
Controlled Vocabulary
| Allowed Value | Details |
|---|---|
| preferred | A value of 'preferred' indicates that rows of any categories specifying this variant should be used in preference to rows with the same key specifying other variants or the null variant. It is an error to specify two variants that appear in the same category with the same key as being preferred, but it is not an error to specify more than one variant as preferred in other cases. |
| raw data | A value of 'raw data' indicates data prior to any corrections, calculations or refinements. It is not necessarily an error for raw data also to be a variant of an earlier variant. It may be replacement raw data for earlier data believed to be erroneous. |
| unsuccessful trial | A value of 'unsuccessful trial' indicates data that should not be used for further calculation. |
Controlled Vocabulary at Deposition
| Allowed Value | Details |
|---|---|
| preferred | A value of 'preferred' indicates that rows of any categories specifying this variant should be used in preference to rows with the same key specifying other variants or the null variant. It is an error to specify two variants that appear in the same category with the same key as being preferred, but it is not an error to specify more than one variant as preferred in other cases. |
| raw data | A value of 'raw data' indicates data prior to any corrections, calculations or refinements. It is not necessarily an error for raw data also to be a variant of an earlier variant. It may be replacement raw data for earlier data believed to be erroneous. |
| unsuccessful trial | A value of 'unsuccessful trial' indicates data that should not be used for further calculation. |