1. A computer implemented method employed in a relational database management system of compressing a data value which includes at least one internal delimiter, the method comprising: using a computing system having a processor to perform a process, the process comprising: parsing a data value corresponding to an RDF (Resource Description Framework) triple having a subject-predicate-object expression to locate the at least one internal delimiter; using the at least one internal delimiter to divide the RDF triple into a prefix and a suffix, in which the prefix includes a non-null, first portion of the RDF triple preceding the at least one internal delimiter, and the prefix and the suffix are separated by the at least one internal delimiter in the RDF triple; and placing the prefix and the suffix into at least two separate fields of an entry in the relational database management system to separately store the prefix and the suffix to compress the RDF triple, wherein a subject of the RDF triple corresponds to the suffix of the RDF triple.