| DatabaseFuncStru | Data structure of database supporting functions |
| FieldProperties | Struct of Field Properties |
| HashSet | HashSet: A set which backed by Hash Table |
| SQL_Result | Data structure that holds the result of SQL functions and command |
| StringList | StringList is a structure that stores a list of constant strings |
| Syllable | Syllable holds transcription and tone |
| UnihanFieldTablePair | Structure for field-table pair |
| UnihanIRG_SourceData | IRG source data |
| UnihanIRG_SourceRec | IRG source rec |
1.5.7.1