## NMR-STAR dictionary: database table: Datum

Detailed description of the fields

### _Datum.Type (Type)

(go to parent tag category listing)

NMR-STAR tag name | _Datum.Type
Description | NMR-STAR name: _Datum.Type A type of quantitative data found in the entry.
Database field name | Type
SQL Database type | VARCHAR(127)
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
Enumerations | [click for a list of enumerations] This is a closed enumeration. The list of values are the only ones allowed.
Prompt | Data type
Examples | 1H chemical shifts
Help text |

### _Datum.Count (Count)

(go to parent tag category listing)

NMR-STAR tag name | _Datum.Count
Description | NMR-STAR name: _Datum.Count An integer representing the total number of values of the type defined by the value to the tag '_Data_type' found in all saveframes in the current entry.
Database field name | Count
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 | no
Nulls allowed in database? | yes
Prompt | Count
Examples | 981
Help text |

### _Datum.Sf_ID (SfID)

(go to parent tag category listing)

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

### _Datum.Entry_ID (EntryID)

(go to parent tag category listing)

NMR-STAR tag name | _Datum.Entry_ID
Description | NMR-STAR name: _Datum.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 |