The ExternalDictionary class encapsulates the behavior of an ordered virtual collection containing keys that represents the rows in a result set generated from an SQL query containing a sort specification; that is, the ORDER BY clause. External dictionaries provide direct key access to an external object instance; that is, random access to a row or tuple in the relational database. For example:
department := E_Company.departments[name];
The ORDER BY specification is generated by the External Schema Wizard and represents the order specification defined for the member-key attribute values.
For details about accessing external dictionary keys and the methods defined in the ExternalDictionary class, see "Associating External Dictionary Key Access Using Subscript Notation" and "ExternalDictionary Methods", in the following subsections.
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