Follow these links for detailed field type information from the Technical Reference Guide:
Common types
The common field types include:
Alpha
Packed
Signed
DateTime
String
Alpha, Packed and Signed field types are always enabled.
When a partition is enabled for RDMLX all the Common Field Types are automatically enabled in the partition.
Specialized types
The specialized field types include:
Char
Binary
VarBinary
Date
Time
Integer
Float
CLOB
BLOB
Boolean
The Specialized Field Types are only available when the partition is RDMLX enabled. These field types must be manually enabled as required.