PDBx:database_2Type 

Data items in the DATABASE_2 category record details about the
database identifiers of the data block.

These data items are assigned by database managers and should
only appear in a data block if they originate from that source.

The name of this category, DATABASE_2, arose because the
category name DATABASE was already in use in the core CIF
dictionary, but was used differently from the way it needed
to be used in the mmCIF dictionary. Since CIF data names
cannot be changed once they have been adopted, a new category
had to be created.

    Example 1 - based on PDB entry 5HVP and laboratory records for the
                structure corresponding to PDB entry 5HVP.
<PDBx:database_2Category>
   <PDBx:database_2 database_code="5HVP" database_id="PDB"></PDBx:database_2>
</PDBx:database_2Category>

Complex Type Information

Model

PDBx:database_2*
Children: PDBx:database_2

Used By

Element PDBx:datablockType/PDBx:database_2Category

Source 

<xsd:complexType name="database_2Type">
  <xsd:annotation>
    <xsd:documentation xml:lang="en">Data items in the DATABASE_2 category record details about the database identifiers of the data block. These data items are assigned by database managers and should only appear in a data block if they originate from that source. The name of this category, DATABASE_2, arose because the category name DATABASE was already in use in the core CIF dictionary, but was used differently from the way it needed to be used in the mmCIF dictionary. Since CIF data names cannot be changed once they have been adopted, a new category had to be created. Example 1 - based on PDB entry 5HVP and laboratory records for the structure corresponding to PDB entry 5HVP. <PDBx:database_2Category> <PDBx:database_2 database_code="5HVP" database_id="PDB"></PDBx:database_2> </PDBx:database_2Category></xsd:documentation>
  </xsd:annotation>
  <xsd:sequence>
    <xsd:element name="database_2" minOccurs="0" maxOccurs="unbounded">
      <xsd:complexType>
        <xsd:attribute name="database_code" use="required" type="xsd:string">
          <xsd:annotation>
            <xsd:documentation xml:lang="en">The code assigned by the database identified in attribute database_id in category database_2. 1ABC ABCDEF</xsd:documentation>
          </xsd:annotation>
        </xsd:attribute>
        <xsd:attribute name="database_id" use="required">
          <xsd:annotation>
            <xsd:documentation xml:lang="en">An abbreviation that identifies the database.</xsd:documentation>
          </xsd:annotation>
          <xsd:simpleType>
            <xsd:restriction base="xsd:string">
              <xsd:enumeration value="CAS"/>
              <xsd:enumeration value="CSD"/>
              <xsd:enumeration value="EMDB"/>
              <xsd:enumeration value="ICSD"/>
              <xsd:enumeration value="MDF"/>
              <xsd:enumeration value="NDB"/>
              <xsd:enumeration value="NBS"/>
              <xsd:enumeration value="PDB"/>
              <xsd:enumeration value="PDF"/>
              <xsd:enumeration value="RCSB"/>
              <xsd:enumeration value="EBI"/>
              <xsd:enumeration value="PDBE"/>
              <xsd:enumeration value="BMRB"/>
              <xsd:enumeration value="WWPDB"/>
            </xsd:restriction>
          </xsd:simpleType>
        </xsd:attribute>
      </xsd:complexType>
    </xsd:element>
  </xsd:sequence>
</xsd:complexType>