## NMR-STAR dictionary: database table: EntityPurity

Detailed description of the fields

### _Entity_purity.ID (EntityPurityID)

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NMR-STAR tag name | _Entity_purity.ID
Description | NMR-STAR name: _Entity_purity.ID An integer value that uniquely identifies the purity value in the table of reported purity values in the entry.
Database field name | EntityPurityID
SQL Database type | INTEGER
Part of primary Key | yes
Foreign Key on table, column | ,
Saveframe ID | yes: This tag contains the identifier for this saveframe in the entry.
Row Index | yes: This tag contains the index of this row in the loop, which is used when the data is loaded into a database which has a relational model in which ordering doesn't matter
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | ID
Examples | ?
Help text |

### _Entity_purity.Sample_ID (SampleID)

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NMR-STAR tag name | _Entity_purity.Sample_ID
Description | NMR-STAR name: _Entity_purity.Sample_ID Pointer to '_Sample.ID'
Database field name | SampleID
SQL Database type | INTEGER
Part of primary Key | no
Foreign Key on table, column | Sample, ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | Sample ID
Examples | ?
Help text |

### _Entity_purity.Sample_label (SampleLabel)

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NMR-STAR tag name | _Entity_purity.Sample_label
Description | NMR-STAR name: _Entity_purity.Sample_label Pointer to a saveframe of the category sample.
Database field name | SampleLabel
SQL Database type | VARCHAR(127)
Part of primary Key | no
Foreign Key on table, column | Sample, Sf_framecode
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | Sample label
Examples | ?
Help text |

### _Entity_purity.Entity_ID (EntityID)

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NMR-STAR tag name | _Entity_purity.Entity_ID
Description | NMR-STAR name: _Entity_purity.Entity_ID Pointer to '_Entity.ID'
Database field name | EntityID
SQL Database type | INTEGER
Part of primary Key | no
Foreign Key on table, column | Entity, ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Entity ID
Examples | ?
Help text |

### _Entity_purity.Entity_label (EntityLabel)

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NMR-STAR tag name | _Entity_purity.Entity_label
Description | NMR-STAR name: _Entity_purity.Entity_label Pointer to a saveframe of the category entity.
Database field name | EntityLabel
SQL Database type | VARCHAR(127)
Part of primary Key | no
Foreign Key on table, column | Entity, Sf_framecode
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Entity label
Examples | ?
Help text |

### _Entity_purity.Val (Val)

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NMR-STAR tag name | _Entity_purity.Val
Description | NMR-STAR name: _Entity_purity.Val Purity value
Database field name | Val
SQL Database type | FLOAT
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 | Val
Examples | ?
Help text |

### _Entity_purity.Val_units (ValUnits)

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NMR-STAR tag name | _Entity_purity.Val_units
Description | NMR-STAR name: _Entity_purity.Val_units Units for the reported purity value.
Database field name | ValUnits
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 | no
Nulls allowed in database? | yes
Prompt | Val units
Examples | ?
Help text |

### _Entity_purity.Measurement_method (MeasurementMethod)

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NMR-STAR tag name | _Entity_purity.Measurement_method
Description | NMR-STAR name: _Entity_purity.Measurement_method Technique used to determine the purity of the molecule.
Database field name | MeasurementMethod
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 | Measurement method
Examples | mass spectrometry
Help text |

### _Entity_purity.Details (Details)

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NMR-STAR tag name | _Entity_purity.Details
Description | NMR-STAR name: _Entity_purity.Details Text describing the reported purity values and measurements.
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 |

### _Entity_purity.Sf_ID (SfID)

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NMR-STAR tag name | _Entity_purity.Sf_ID
Description | NMR-STAR name: _Entity_purity.Sf_ID Pointer to '_Entity_purity_list.Sf_ID'
Database field name | SfID
SQL Database type | INTEGER
Part of primary Key | no
Foreign Key on table, column | Entity_purity_list, Sf_ID
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 |

### _Entity_purity.Entry_ID (EntryID)

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NMR-STAR tag name | _Entity_purity.Entry_ID
Description | NMR-STAR name: _Entity_purity.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 | Entity_purity_list, 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 |

### _Entity_purity.Entity_purity_list_ID (EntityPurityListID)

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NMR-STAR tag name | _Entity_purity.Entity_purity_list_ID
Description | NMR-STAR name: _Entity_purity.Entity_purity_list_ID Pointer to '_Entity_purity_list.ID'
Database field name | EntityPurityListID
SQL Database type | INTEGER
Part of primary Key | yes
Foreign Key on table, column | Entity_purity_list, ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Entity purity ID
Examples | ?
Help text |