## NMR-STAR dictionary: database table: ChemShiftReference

Detailed description of the fields

### _Chem_shift_reference.Sf_category (SfCategory)

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NMR-STAR tag name | _Chem_shift_reference.Sf_category
Description | NMR-STAR name: _Chem_shift_reference.Sf_category Category assigned to the information in the saveframe.
Database field name | SfCategory
SQL Database type | VARCHAR(127)
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Chem shift reference label
Examples | ?
Help text |

### _Chem_shift_reference.Sf_framecode (SfFramecode)

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NMR-STAR tag name | _Chem_shift_reference.Sf_framecode
Description | NMR-STAR name: _Chem_shift_reference.Sf_framecode A descriptive label that uniquely identifies this list of chemical shift referencing parameters used in reporting assigned chemical shifts and other chemical shift data.
Database field name | SfFramecode
SQL Database type | VARCHAR(127)
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Chemical shift reference set label
Examples | ?
Help text |

### _Chem_shift_reference.Entry_ID (EntryID)

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NMR-STAR tag name | _Chem_shift_reference.Entry_ID
Description | NMR-STAR name: _Chem_shift_reference.Entry_ID Pointer to '_Entry.ID'
Database field name | EntryID
SQL Database type | CHAR(12)
Part of primary Key | yes
Foreign Key on table, column | Entry, ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Entry ID
Examples | ?
Help text |

### _Chem_shift_reference.Sf_ID (SfID)

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NMR-STAR tag name | _Chem_shift_reference.Sf_ID
Description | NMR-STAR name: _Chem_shift_reference.Sf_ID An integer value that is the unique identifier for the saveframe that applies across the archive. This value is not stable and may be reassigned each time the data are loaded into a database system.
Database field name | SfID
SQL Database type | INTEGER
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | yes This field's data is for internal use only and should be hidden in public versiond of the data.
Nulls allowed in database? | yes
Prompt | Sf ID
Examples | ?
Help text |

### _Chem_shift_reference.ID (ChemShiftReferenceID)

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NMR-STAR tag name | _Chem_shift_reference.ID
Description | NMR-STAR name: _Chem_shift_reference.ID An integer value that uniquely identifies this saveframe of chemical shift reference values from other saveframes of this category in an entry.
Database field name | ChemShiftReferenceID
SQL Database type | INTEGER
Part of primary Key | yes
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Chem shift ref ID
Examples | ?
Help text |

### _Chem_shift_reference.Proton_shifts_flag (ProtonShiftsFlag)

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NMR-STAR tag name | _Chem_shift_reference.Proton_shifts_flag
Description | NMR-STAR name: _Chem_shift_reference.Proton_shifts_flag Please indicate if you are depositing 1H chemical shifts by selecting one of the three options. If you have used the IUPAC recommend method for referencing 1H chemical shifts (DSS was used as the standard), then select the 'yes with IUPAC referencing' option. After clicking on the 'Save Changes' button, the fields for the 1H chemical shift referencing will be automatically filled in with the appropriate values.
Database field name | ProtonShiftsFlag
SQL Database type | VARCHAR(31)
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | yes This field's data is for internal use only and should be hidden in public versiond of the data.
Nulls allowed in database? | no
Enumerations | [click for a list of enumerations] This is a closed enumeration. The list of values are the only ones allowed.
Prompt | 1H chemical shifts deposited
Examples | ?
Help text |

### _Chem_shift_reference.Carbon_shifts_flag (CarbonShiftsFlag)

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NMR-STAR tag name | _Chem_shift_reference.Carbon_shifts_flag
Description | NMR-STAR name: _Chem_shift_reference.Carbon_shifts_flag Please indicate if you are depositing 13C chemical shifts. If you have used the IUPAC recommend method for referencing 13C chemical shifts (DSS was used as the standard and the correct 1H/13C ratio), then select the 'yes with IUPAC referencing' option. After clicking on the 'Save Changes' button, the fields for the 13C chemical shift referencing will be automatically filled in with the appropriate values.
Database field name | CarbonShiftsFlag
SQL Database type | VARCHAR(31)
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | yes This field's data is for internal use only and should be hidden in public versiond of the data.
Nulls allowed in database? | no
Enumerations | [click for a list of enumerations] This is a closed enumeration. The list of values are the only ones allowed.
Prompt | 13C chemcial shifts deposited
Examples | ?
Help text |

### _Chem_shift_reference.Nitrogen_shifts_flag (NitrogenShiftsFlag)

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NMR-STAR tag name | _Chem_shift_reference.Nitrogen_shifts_flag
Description | NMR-STAR name: _Chem_shift_reference.Nitrogen_shifts_flag Please indicate if you are depositing 15N chemical shifts. If you have used the IUPAC recommend method for referencing 15N chemical shifts (DSS was used as the standard and the correct 1H/15N ratio), then select the 'yes with IUPAC referencing' option. After clicking on the 'Save Changes' button, the fields for the 15N chemical shift referencing will be automatically filled in with the appropriate values.
Database field name | NitrogenShiftsFlag
SQL Database type | VARCHAR(31)
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | yes This field's data is for internal use only and should be hidden in public versiond of the data.
Nulls allowed in database? | no
Enumerations | [click for a list of enumerations] This is a closed enumeration. The list of values are the only ones allowed.
Prompt | 15N chemical shifts deposited
Examples | ?
Help text |

### _Chem_shift_reference.Phosphorus_shifts_flag (PhosphorusShiftsFlag)

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NMR-STAR tag name | _Chem_shift_reference.Phosphorus_shifts_flag
Description | NMR-STAR name: _Chem_shift_reference.Phosphorus_shifts_flag Please indicate if you are depositing 31P chemical shifts. If you have used the IUPAC recommend method for referencing 31P chemical shifts (DSS was used as the standard and the correct 1H/31P ratio), then select the 'yes with IUPAC referencing' option. After clicking on the 'Save Changes' button, the fields for the 31P chemical shift referencing will be automatically filled in with the appropriate values.
Database field name | PhosphorusShiftsFlag
SQL Database type | VARCHAR(31)
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | yes This field's data is for internal use only and should be hidden in public versiond of the data.
Nulls allowed in database? | no
Enumerations | [click for a list of enumerations] This is a closed enumeration. The list of values are the only ones allowed.
Prompt | 31P chemical shifts deposited
Examples | ?
Help text |

### _Chem_shift_reference.Other_shifts_flag (OtherShiftsFlag)

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NMR-STAR tag name | _Chem_shift_reference.Other_shifts_flag
Description | NMR-STAR name: _Chem_shift_reference.Other_shifts_flag If you are depositing chemical shifts for a nuclei other than 1H, 13C, 15N, or 31P, select the 'yes' option otherwise select the 'no' option.
Database field name | OtherShiftsFlag
SQL Database type | VARCHAR(31)
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | yes This field's data is for internal use only and should be hidden in public versiond of the data.
Nulls allowed in database? | no
Enumerations | [click for a list of enumerations] This is a closed enumeration. The list of values are the only ones allowed.
Prompt | Other nuclei chemical shifts deposited
Examples | ?
Help text |

### _Chem_shift_reference.Details (Details)

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NMR-STAR tag name | _Chem_shift_reference.Details
Description | NMR-STAR name: _Chem_shift_reference.Details Text providing additional information regarding the reported chemical shift referencing values or methods.
Database field name | Details
SQL Database type | TEXT
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | Details
Examples | ?
Help text |