## NMR-STAR dictionary: database table: ChemCompBond

Detailed description of the fields

### _Chem_comp_bond.ID (ChemCompBondID)

(go to parent tag category listing)

NMR-STAR tag name | _Chem_comp_bond.ID
Description | NMR-STAR name: _Chem_comp_bond.ID The value of _chem_comp_bond.id must uniquely identify a record in the Chem_comp_bond list.
Database field name | ChemCompBondID
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 | Chem comp bond ID
Examples | ?
Help text |

### _Chem_comp_bond.Type (Type)

(go to parent tag category listing)

NMR-STAR tag name | _Chem_comp_bond.Type
Description | NMR-STAR name: _Chem_comp_bond.Type A common chemical bond descriptive name.
Database field name | Type
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 | Chem comp bond type
Examples | ?
Help text |

### _Chem_comp_bond.Value_order (ValueOrder)

(go to parent tag category listing)

NMR-STAR tag name | _Chem_comp_bond.Value_order
Description | NMR-STAR name: _Chem_comp_bond.Value_order The value that should be taken as the target for the chemical bond associated with the specified atoms, expressed as a bond order.
Database field name | ValueOrder
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 | Chem comp bond order
Examples | ?
Help text |

### _Chem_comp_bond.Atom_ID_1 (AtomID1)

(go to parent tag category listing)

NMR-STAR tag name | _Chem_comp_bond.Atom_ID_1
Description | NMR-STAR name: _Chem_comp_bond.Atom_ID_1 Pointer to '_Chem_comp_atom.Atom_ID'
Database field name | AtomID1
SQL Database type | CHAR(12)
Part of primary Key | no
Foreign Key on table, column | Chem_comp_atom, Atom_ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Atom 1 atom ID
Examples | ?
Help text |

### _Chem_comp_bond.Atom_ID_2 (AtomID2)

(go to parent tag category listing)

NMR-STAR tag name | _Chem_comp_bond.Atom_ID_2
Description | NMR-STAR name: _Chem_comp_bond.Atom_ID_2 Pointer to '_Chem_comp_atom.Atom_ID'
Database field name | AtomID2
SQL Database type | CHAR(12)
Part of primary Key | no
Foreign Key on table, column | Chem_comp_atom, Atom_ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Atom 2 atom ID
Examples | ?
Help text |

### _Chem_comp_bond.Aromatic_flag (AromaticFlag)

(go to parent tag category listing)

NMR-STAR tag name | _Chem_comp_bond.Aromatic_flag
Description | NMR-STAR name: _Chem_comp_bond.Aromatic_flag ?
Database field name | AromaticFlag
SQL Database type | VARCHAR(3)
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
Enumerations | [click for a list of enumerations] This is a closed enumeration. The list of values are the only ones allowed.
Prompt | Aromatic flag
Examples | no
Help text |

### _Chem_comp_bond.Stereo_config (StereoConfig)

(go to parent tag category listing)

NMR-STAR tag name | _Chem_comp_bond.Stereo_config
Description | NMR-STAR name: _Chem_comp_bond.Stereo_config ?
Database field name | StereoConfig
SQL Database type | VARCHAR(3)
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
Enumerations | [click for a list of enumerations] This is a closed enumeration. The list of values are the only ones allowed.
Prompt | Stereo config
Examples | E
Help text |

### _Chem_comp_bond.Ordinal (Ordinal)

(go to parent tag category listing)

NMR-STAR tag name | _Chem_comp_bond.Ordinal
Description | NMR-STAR name: _Chem_comp_bond.Ordinal ?
Database field name | Ordinal
SQL Database type | INTEGER
Part of primary Key | no
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? | no
Prompt | Ordinal
Examples | 1
Help text |

### _Chem_comp_bond.Details (Details)

(go to parent tag category listing)

NMR-STAR tag name | _Chem_comp_bond.Details
Description | NMR-STAR name: _Chem_comp_bond.Details A text description of the bond.
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 |

### _Chem_comp_bond.Sf_ID (SfID)

(go to parent tag category listing)

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

### _Chem_comp_bond.Entry_ID (EntryID)

(go to parent tag category listing)

NMR-STAR tag name | _Chem_comp_bond.Entry_ID
Description | NMR-STAR name: _Chem_comp_bond.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 | Chem_comp, 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_comp_bond.Comp_ID (CompID)

(go to parent tag category listing)

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