<DataSearchCond>::=DataSingleCond
LogicalOperator(<DataSearchCond>,<DataSearchCond>)
compress(Attr_name,<DataSearchCond>)
DataSingleCond::=RangeSearch 
Attr_name ComparisonOperator Attr_value 
PartialMatchingSearch 
Attr_name ComparisonOperator Attr_name 
not_exist(Attr_name) 
is_null(Attr_name)
Attr_name::= ATOM
PartialMatchingSearch::=Attr_name= concat(String,*) 
Attr_name= concat(*,String) 
Attr_name= concat(*,String,*) 
etc.
Attr_value::= INTEGER 
STRING