it's in RDU format.
RDBTool by Glandu2 doesnt provide functionality to work with RDU's, so here is a structure (yet incomplete).
'*****RDU
'char[6] file_descriptor #RC_RDU
'int8 unknown1 #always 1
'int8 unknown2 #always 1
'uint16 column_count
'{
' uint8 column_name_length
' char[column_name_length] column_name
' int32 data_type
' uint16 cell_data_size
' uint8 column_precision #any is acceptable by client
' uint8 column_scale #any is acceptable by client
' char[2] unknown3 #{0,0}
' uint8 collation_length
' char[collation_length] collation
'} [column_count] entry
'char[9] unknown4 #{1,0,1,0,1,0,0,0,2}
'uint8 rdu_name_length
'char[rdu_name_length] rdu_name
'int16 keys_count #???
'{
' uint8 key_length
' char[key_length + 1] key #zero-ended string
'} [keys_count]
'int32 row_count
'entry[row_count]
For db_enhanceeffect.rdb RDU row structure is:
name=sid type=int32 db_type=int
name=sub_id type=int16 db_type=smallint
name=effect_id type=int16 db_type=smallint
name=value_01 type=float64 db_type=decimal(10,2)
name=value_02 type=float64 db_type=decimal(10,2)
name=value_03 type=float64 db_type=decimal(10,2)
name=value_04 type=float64 db_type=decimal(10,2)
name=value_05 type=float64 db_type=decimal(10,2)
name=value_06 type=float64 db_type=decimal(10,2)
name=value_07 type=float64 db_type=decimal(10,2)
name=value_08 type=float64 db_type=decimal(10,2)
name=value_09 type=float64 db_type=decimal(10,2)
name=value_10 type=float64 db_type=decimal(10,2)
name=value_11 type=float64 db_type=decimal(10,2)
name=value_12 type=float64 db_type=decimal(10,2)
name=value_13 type=float64 db_type=decimal(10,2)
name=value_14 type=float64 db_type=decimal(10,2)
name=value_15 type=float64 db_type=decimal(10,2)
name=value_16 type=float64 db_type=decimal(10,2)
name=value_17 type=float64 db_type=decimal(10,2)
name=value_18 type=float64 db_type=decimal(10,2)
name=value_19 type=float64 db_type=decimal(10,2)
name=value_20 type=float64 db_type=decimal(10,2)
name=value_21 type=float64 db_type=decimal(10,2)
name=value_22 type=float64 db_type=decimal(10,2)
name=value_23 type=float64 db_type=decimal(10,2)
name=value_24 type=float64 db_type=decimal(10,2)
name=value_25 type=float64 db_type=decimal(10,2)