Efficient evaluation of XML middle-ware queries
SIGMOD '01 Proceedings of the 2001 ACM SIGMOD international conference on Management of data
XRel: a path-based approach to storage and retrieval of XML documents using relational databases
ACM Transactions on Internet Technology (TOIT)
Storing and querying ordered XML using a relational database system
Proceedings of the 2002 ACM SIGMOD international conference on Management of data
Querying XML Views of Relational Data
Proceedings of the 27th International Conference on Very Large Data Bases
Answering XML Queries on Heterogeneous Data Sources
Proceedings of the 27th International Conference on Very Large Data Bases
MIL primitives for querying a fragmented world
The VLDB Journal — The International Journal on Very Large Data Bases
ORDPATHs: insert-friendly XML node labels
SIGMOD '04 Proceedings of the 2004 ACM SIGMOD international conference on Management of data
C-store: a column-oriented DBMS
VLDB '05 Proceedings of the 31st international conference on Very large data bases
XQuery implementation in a relational database system
VLDB '05 Proceedings of the 31st international conference on Very large data bases
MonetDB/XQuery: a fast XQuery processor powered by a relational engine
Proceedings of the 2006 ACM SIGMOD international conference on Management of data
Why off-the-shelf RDBMSs are better at XPath than you might expect
Proceedings of the 2007 ACM SIGMOD international conference on Management of data
Efficiently Querying Large XML Data Repositories: A Survey
IEEE Transactions on Knowledge and Data Engineering
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
Efficient XML-to-SQL query translation: where to add the intelligence?
VLDB '04 Proceedings of the Thirtieth international conference on Very large data bases - Volume 30
VLDB '04 Proceedings of the Thirtieth international conference on Very large data bases - Volume 30
Proceedings of the sixteenth ACM conference on Conference on information and knowledge management
Efficient support for ordered xpath processing in tree-unaware commercial relational databases
DASFAA'07 Proceedings of the 12th international conference on Database systems for advanced applications
Stars on steroids: fast evaluation of multi-source star twig queries in RDBMS
DASFAA'12 Proceedings of the 17th international conference on Database Systems for Advanced Applications - Volume Part I
Let a single FLWOR bloom: (to improve XQuery plan generation)
XSym'07 Proceedings of the 5th international conference on Database and XML Technologies
Hi-index | 0.00 |
Despite a large body of work on XML twig query processing in relational environment, systematic study of XML join evaluation has received little attention in the literature. In this paper, we propose a novel and non-traditional technique for fast evaluation of multi-source star twig queries in a path materialization-based RDBMS. A multi-source star twig joins different XML documents on values in their nodes and the XQuery graph takes a star-shaped structure. Such queries are prevalent in several domains such as life sciences. Rather than following the conventional approach of generating one huge complex SQL query from a twig query, we translate a star query into a list of SQL sub-queries that only materializes minimal information of underlying XML subtrees as intermediate results. We have implemented this scheme on top of a path materialization-based XML storage system called SUCXENT++. Experiments carried out confirm that our proposed approach built on top of an off-the-shelf commercial RDBMS has excellent real-world performance.