An Empirical Evaluation of XQuery Processors (2009)
This paper presents an extensive and detailed experimental evaluation of XQuery processors. The study consists of running five publicly available XQuery benchmarks — the Michigan benchmark...
Armada: a Reference Model for an Evolving Database System (2009)
Fabian Groffen, Martin Kersten, Stefan Manegold
Abstract: The data on the web, in digital libraries, in scientific repositories, etc. continues to grow at an increasing rate. Distribution is a key solution to overcome this data explosion. However,...
ABSTRACT Updating the Pre/Post Plane in MonetDB/XQuery (2009)
We outline an efficient ACID-compliant mechanism for structural inserts and deletes in relational XML document storage that uses a region based pre/size/level encoding (equivalent to the pre/post...
Repeatability & Workability Evaluation of SIGMOD 2009 (2009)
Manegold, Stefan, Manolescu, Ioana, Afanasiev, Loredana, Feng, Jianling, Gou, Gang, Hadjieleftheriou, Marios, ...
This paper reports on the SIGMOD 2009 Repeatability and Workability initiative, an effort to verify the experiments presented in articles accepted to the ACM SIGMOD 2009 conference. We summarize the...
Repeatability & Workability Evaluation of SIGMOD 2009 (2009)
Manegold, Stefan, Manolescu, Ioana, Afanasiev, Loredana, Feng, Jianling, Gou, Gang, Hadjieleftheriou, Marios, ...
This paper reports on the SIGMOD 2009 Repeatability and Workability initiative, an effort to verify the experiments presented in articles accepted to the ACM SIGMOD 2009 conference. We summarize the...
1 Introduction Pathfinder: XQuery—The Relational Way (2008)
Peter Boncz, Torsten Grust, Maurice Keulen, Stefan Manegold, Jan Rittinger, Jens Teubner
Pathfinder/MonetDB: XQuery—The Relational Way (2008)
Peter Boncz, Torsten Grust, Maurice Keulen, Stefan Manegold, Jan Rittinger, Jens Teubner
MonetDB/XQuery—Consistent and Efficient Updates on the Pre/Post Plane (2008)
Peter Boncz, Jan Flokstra, Maurice Van Keulen, Stefan Manegold, Sjoerd Mullender, Jan Rittinger, ...
en Informatica REPORTRAPPORT Information Systems INformation Systems (2007)
S. Manegold, P. A. Boncz, M. L. Kersten, Stefan Manegold, Peter Boncz, Martin L. Kersten
Generic database cost models for hierarchical memory systems
S. Manegold, F. Waas, M. L. Kersten, Stefan Manegold, Florian Waas, Martin L. Kersten
and their applications. SMC is sponsored by the Netherlands Organization for Scientific Research (NWO). CWI is a member of
Efficient Resource Utilization in Shared-Everything Environments (2007)
S. Manegold, J. K. Obermaier, Mathematisch Centrum (smc, The Dutch Foundation, Stefan Manegold, Johann K. Obermaier
and their applications. SMC is sponsored by the Netherlands Organization for Scientific Research (NWO). CWI is a member of
MonetDB/XQuery: a fast XQuery processor powered by a relational engine (2006)
Peter Boncz, Torsten Grust, Maurice Keulen, Stefan Manegold, Jan Rittinger, Jens Teubner
Relational XQuery systems try to re-use mature relational data management infrastructures to create fast and scalable XML database technology. This paper describes the main features, key...
MonetDB/XQuery: a fast XQuery processor powered by a relational engine (2006)
Peter Boncz, Torsten Grust, Maurice Keulen, Stefan Manegold, Jan Rittinger, Jens Teubner
Relational XQuery systems try to re-use mature relational data management infrastructures to create fast and scalable XML database technology. This paper describes the main features, key...
MonetDB/XQuery: A Fast XQuery Processor Powered by a Relational Engine (2006)
Peter Boncz, Torsten Grust, Maurice Keulen, Stefan Manegold, Jan Rittinger, Jens Teubner
Relational XQuery systems try to re-use mature relational data management infrastructures to create fast and scalable XML database technology. This paper describes the main features, key...
Cracking the Database Store (2005)
Martin Kersten, Stefan Manegold
Query performance strongly depends on finding an execution plan that touches as few superfluous tuples as possible. The access structures deployed for this purpose, however, are non-discriminative....
Cracking the Database Store (2005)
M. L. Kersten, S. Manegold, Martin Kersten, Stefan Manegold
CWI is a founding member of ERCIM, the European Research Consortium for Informatics and Mathematics. CWI's research has a theme-oriented structure and is grouped into four clusters. Listed below...
Pathfinder: XQuery—The Relational Way (2005)
Peter Boncz, Torsten Grust, Maurice Keulen, Stefan Manegold, Jan Rittinger, Jens Teubner
Relational query processors are probably the best understood (as well as the best engineered) query engines available today. Although carefully tuned to process instances of the relational model...
Updating the Pre/Post Plane in MonetDB/XQuery (2005)
Peter Boncz, Stefan Manegold, Jan Rittinger
We outline an efficient ACID-compliant mechanism for structural inserts and deletes in relational XML document storage that uses a region based pre/size/level encoding (equivalent to the pre/post...
Cache-Conscious Radix-Decluster Projections (2004)
Stefan Manegold, Peter Boncz, Niels Nes, Martin Kersten
As CPUs become more powerful with Moore’s law and memory latencies stay constant, the impact of the memory access performance bottleneck continues to grow on relational operators like join, which...
Optimizing main-memory join on modern hardware (2002)
Stefan Manegold, Peter Boncz, Martin Kersten, Ieee Computer Society
AbstractÐIn the past decade, the exponential growth in commodity CPU's speed has far outpaced advances in memory latency. A second trend is that CPU performance advances are not only brought by...
Generic Database Cost Models for Hierarchical Memory Systems (2002)
Stefan Manegold, Peter Boncz, Martin L. Kersten
Accurate prediction of operator execution time is a prerequisite for database query optimization. Although extensively studied for conventional disk-based DBMSs, cost modeling in mainmemory DBMSs is...
Optimizing main-memory join on modern hardware (2002)
S. Manegold, P. Boncz, M. L. Kersten, Stefan Manegold, Peter Boncz, Martin Kersten
and their applications. SMC is sponsored by the Netherlands Organization for Scientific Research (NWO). CWI is a member of
Optimizing main-memory join on modern hardware (2002)
S. Manegold, P. Boncz, M. L. Kersten, Stefan Manegold, Peter Boncz, Martin Kersten
and their applications. SMC is sponsored by the Netherlands Organization for Scientific Research (NWO). CWI is a member of
A Multi-Query Optimizer for Monet (2000)
S. Manegold, J. Pellenkoft, M. L. Kersten, Stefan Manegold, Arjan Pellenkoft, Martin Kersten
and their applications. SMC is sponsored by the Netherlands Organization for Scientific Research (NWO). CWI is a member of
ABSTRACT Optimizing Main-Memory Join On Modern Hardware (1999)
Stefan Manegold, Peter Boncz, Martin Kersten
and their ��� � � ¥ §�§�������§�������������¨������¢��¨������� �...
Database architecture optimized for the new bottleneck: Memory access (1999)
Peter Boncz, Stefan Manegold, Martin L. Kersten
In the past decade, advances in speed of commodity CPUs have far out-paced advances in memory latency. Main-memory access is therefore increasingly a performance bottleneck for many computer...
Database Architecture Optimized for the new Bottleneck: Memory Access (1999)
Peter Boncz, Stefan Manegold, Martin L. Kersten
In the past decade, advances in speed of commodity CPUs have far out-paced advances in memory latency. Main-memory access is therefore increasingly a performance bottleneck for many computer...
Database architecture optimized for the new bottleneck: Memory access (1999)
Peter Boncz, Stefan Manegold, Martin L. Kersten
In the past decade, advances in speed of commodity CPUs have far out-paced advances in memory latency. Main-memory access is therefore increasingly a performance bottleneck for many computer...
ABSTRACT On Optimal Pipeline Processing in Parallel Query Execution (1998)
S. Manegold, F. Waas, M. L. Kersten, Copyright Stichting, Mathematisch Centrum, Stefan Manegold, ...
and their applications. SMC is sponsored by the Netherlands Organization for Scientific Research (NWO). CWI is a member of
Load Balanced Query Evaluation in Shared-Everything Environments (1997)
Stefan Manegold, Johann K. Obermaier, Florian Waas, Johann-Christoph Freytag
In this paper, we present data threaded execution, a new strategy to exploit pipelining and intra-operator parallelism in a shared-everything environment. Data threaded execution is resistent against...
Load Balanced Query Evaluation in SharedEverything Environments (1997)
Stefan Manegold, Johann K. Obermaier, Florian Waas
In this paper, we present data threaded execution, a new strategy to exploit pipelining and intraoperator parallelism in a shared-everything environment. Data threaded execution is very intuitive,...
E�cient Resource Utilization in Shared-Everything Environments (1997)
S. Manegold, J. K. Obermaier, Stefan Manegold, Johann K. Obermaier
and their applications. SMC is sponsored by the Netherlands Organization for Scientific Research (NWO). CWI is a member of
Data Threaded Query Evaluation in Shared-Everything Environments (1996)
Stefan Manegold, Johann K. Obermaier, Florian Waas, Johann-christoph Freytag
In this paper, we present data threaded execution, a new strategy to exploit pipelining and intra-operator parallelism in a shared-everything environment. Data threaded execution does neither suffer...