17. The apparatus according to claim 12 further comprising: a converter for converting the dataset into at least one pre-processed content field.
17. The apparatus according to claim 12 further comprising: a converter for converting the dataset into at least one pre-processed content field. 18. The apparatus according to claim 17 , wherein said converter further comprises: a generator for generating a content table with said at least one pre-processed content field in said content table, at least one record in said content table having a node identifier field containing the corresponding node identifier, a block identifier field and a content or content reference field.