SQLCOLUMNS File
SQLCOLUMNS contains a column definition item for each column in each table defined in SQLTABLES.
Caution
Do not modify the contents of SQLCOLUMNS except by using SQLM.
The attributes of column definition item are as follows:
000 ItemId
001 Data_Type
002 Reserved
003 Precision
004 Scale
005 Reality_Attribute_Number
006 Multivalue_Code
007 Subvalue_Code
008 Data_Generation_Conversion
009 Output_Conversion
010 Input_Conversion
011 Update_Conversion
012 Max_Header_Length
013 Nullable
014 Primary_Key
015 Unique
016 Reserved
017 Reserved
018 Special_Null_Handling