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OLAP preferences

Stefano Rizzi
2007 Proceedings of the ACM tenth international workshop on Data warehousing and OLAP - DOLAP '07  
In this paper we outline the main research issues to be faced in order to develop a system for handling user preferences on OLAP cubes.  ...  Expressing preferences when querying databases is a natural way to avoid empty results and information flooding, and in general to rank results so that the user may first see the data that better match  ...  On the other hand, cubes (implemented either on relational or on multidimensional platforms) are the core of data warehousing systems and business intelligence systems.  ... 
doi:10.1145/1317331.1317350 dblp:conf/dolap/Rizzi07 fatcat:mfsci5kqu5gm3cj7pszjezxsyi

Report on the ACM fourth international workshop on data warehousing and OLAP (DOLAP 2001)

Joachim Hammer
2002 SIGMOD record  
Acknowledgements DOLAP 2001 was sponsored by ACM's Special Interest Groups on Information Retrieval and Management Information Systems.  ...  Park, treasurer and registration chair, and to the extremely competent members of the DOLAP Program Committee for helping us put together a strong workshop program.  ...  Introduction The Fourth Annual ACM International Workshop on Data Warehousing and Online Analytical Processing (DOLAP 2001) was held in Atlanta, GA, USA, in November 2001, in conjunction with the Tenth  ... 
doi:10.1145/565117.565135 fatcat:cexs4hkguzdmjfmlyhob7o6xpi

Using AutoMed metadata in data warehousing environments

Hao Fan, Alexandra Poulovassilis
2003 Proceedings of the 6th ACM international workshop on Data warehousing and OLAP - DOLAP '03  
What kind of metadata can be used for expressing the multiplicity of data models and the data transformation and integration processes in data warehousing environments?  ...  We examine how these questions are addressed by AutoMed, a system for expressing data transformation and integration processes in heterogeneous database environments.  ...  There are three main differences between this approach and the traditional data warehousing approach based on a single conceptual data model (CDM): 1.  ... 
doi:10.1145/956073.956076 fatcat:dplruc6ohzfi3bn3mpoyigagkm

Report on the ACM fourth international workshop on data warehousing and OLAP (DOLAP 2001)

Joachim Hammer
2002 SIGIR Forum  
Acknowledgements DOLAP 2001 was sponsored by ACM's Special Interest Groups on Information Retrieval and Management Information Systems.  ...  Park, treasurer and registration chair, and to the extremely competent members of the DOLAP Program Committee for helping us put together a strong workshop program.  ...  Introduction The Fourth Annual ACM International Workshop on Data Warehousing and Online Analytical Processing (DOLAP 2001) was held in Atlanta, GA, USA, in November 2001, in conjunction with the Tenth  ... 
doi:10.1145/584449.584455 fatcat:cglv6e74rjetjpq6b46nc3gxxa

Beyond data warehousing

Matteo Golfarelli, Stefano Rizzi, Iuris Cella
2004 Proceedings of the 7th ACM international workshop on Data warehousing and OLAP - DOLAP '04  
The DW process, though supporting bottom-up extraction of information from data, fails in top-down enforcing the company strategy.  ...  During the last ten years the approach to business management has deeply changed, and companies have understood the importance of enforcing achievement of the goals defined by their strategy through metrics-driven  ...  data warehousing.  ... 
doi:10.1145/1031763.1031765 dblp:conf/dolap/GolfarelliRC04 fatcat:peqrorvapfggtcxcn4bd2lnfqq

Report on the ACM sixth international workshop on data warehousing and OLAP (DOLAP 2003)

Stefano Rizzi, Il-Yeol Song
2004 SIGIR Forum  
Acknowledgements DOLAP 2003 was sponsored by ACM's Special Interest Groups on Information Retrieval and Management Information Systems.  ...  We would like to thank the program committee of DOLAP 2003 for the precious reviewing effort, the organizing committee of CIKM 2003 for their support for registration, and the DOLAP Steering Committee  ...  The DOLAP (ACM International Workshop on Data Warehousing and OLAP) series of workshops, which started in 1998, has become a landmark for researchers and practitioners in the data warehousing field over  ... 
doi:10.1145/986278.986290 fatcat:y7giueg62jdevj7kvpocjdbata

Advanced visualization for OLAP

Andreas S. Maniatis, Panos Vassiliadis, Spiros Skiadopoulos, Yannis Vassiliou
2003 Proceedings of the 6th ACM international workshop on Data warehousing and OLAP - DOLAP '03  
Data visualization is one of the big issues of database research. OLAP as a decision support technology is highly related to the developments of data visualization area.  ...  We consider how the user interacts with an OLAP screen and based on the particularities of Table Lens , we propose an automated proactive users support.  ...  INTRODUCTION In the last years, On-Line Analytical Processing (OLAP) and data warehousing have become major research areas in the database community [3, 7] .  ... 
doi:10.1145/956061.956063 fatcat:m5sd2c3rzbe2jpr7x6v6vqgcki

Achieving adaptivity for OLAP-XML federations

Dennis Pedersen, Torben Bach Pedersen
2003 Proceedings of the 6th ACM international workshop on Data warehousing and OLAP - DOLAP '03  
Motivated by the need for more flexible OLAP systems, this paper presents work on logical integration of external data in OLAP databases, carried out in cooperation between the Danish OLAP client vendor  ...  Earlier work has resulted in an extension of the TARGIT system, allowing external XML data to be used as dimensions and measures in OLAP databases.  ...  One of the most important is caching of both raw XML data and of query results containing both OLAP and XML data.  ... 
doi:10.1145/956065.956066 fatcat:dxq5ip2g4ffr5panakdepjmhzu

Attribute value reordering for efficient hybrid OLAP

Owen Kaser, Daniel Lemire
2003 Proceedings of the 6th ACM international workshop on Data warehousing and OLAP - DOLAP '03  
The normalization of a data cube is the process of choosing an ordering for the attribute values, and the chosen ordering will affect the physical storage of the cube's data.  ...  For large multidimensional arrays, proper normalization can lead to more efficient storage in hybrid OLAP contexts that store dense and sparse chunks differently.  ...  We distinguish between two types of OLAP engines: Relational OLAP (ROLAP) and Multidimensional OLAP (MOLAP).  ... 
doi:10.1145/956061.956062 fatcat:gfz5injhefhg7k74a4sq5wdftu

XCube

Wolfgang Hümmer, Andreas Bauer, Gunnar Harde
2003 Proceedings of the 6th ACM international workshop on Data warehousing and OLAP - DOLAP '03  
Data warehouse systems are nowadays a well known and widely spread approach for supporting management decisions.  ...  XCube is organized in a modular fashion, so the multidimensional schema, the descriptions of the single dimensions and the fact data itself can be transmitted in separate steps.  ...  OLAP tools, ETL tools etc. More detailed information on CWM can be found in [16] . Another proposal for a meta data standard for data warehouses is MetaCube-X ( [17] ) which is based on XML.  ... 
doi:10.1145/956065.956067 fatcat:fc77roravrd33cf2utret75niy

CineCubes

Dimitrios Gkesoulis, Panos Vassiliadis
2013 Proceedings of the sixteenth international workshop on Data warehousing and OLAP - DOLAP '13  
Then, the system visualizes the query results and accompanies this presentation with a text commenting on the result highlights.  ...  In this paper we investigate how we can exploit the existence of a star schema in order to answer user OLAP queries with CineCube movies.  ...  This research has been co-financed by the European Union (European Social Fund -ESF) and Greek national funds through the Operational Program "Education and Lifelong Learning" of the National Strategic  ... 
doi:10.1145/2513190.2513191 dblp:conf/dolap/GkesoulisV13 fatcat:oiuith3m5fd2bgwgegnsbzvyhi

CubiST

Lixin Fu, Joachim Hammer
2000 Proceedings of the 3rd ACM international workshop on Data warehousing and OLAP - DOLAP '00  
Being able to efficiently answer arbitrary OLAP queries that aggregate along any combination of dimensions over numerical and categorical attributes has been a continued, major concern in data warehousing  ...  CubiST is the first OLAP algorithm that needs only one scan over the detailed data set and can efficiently answer any cube query without additional I/O when the ST fits into memory.  ...  RELATED RESEARCH Research related to this work falls into three broad categories: OLAP servers including ROLAP and MOLAP, indexing, and view materialization in data warehousing.  ... 
doi:10.1145/355068.355318 dblp:conf/dolap/FuH00 fatcat:bnjirypj4ffcpggwwao6xzozki

Aggregation everywhere

Steven Tolkin
1999 Proceedings of the 2nd ACM international workshop on Data warehousing and OLAP - DOLAP '99  
Aggregation occurs everywhere: initial bucketing by the natural keys on the mainframe, loading the fact table using a mapping table, maintaining aggregate tables and reporting tables in the data base,  ...  This paper describes the Phoenix system, which loads a data warehouse and then reports against it.  ...  It provides access to data in two main ways: a set of parameterized reports, and on-line analytical processing (OLAP) tools.  ... 
doi:10.1145/319757.319795 dblp:conf/dolap/Tolkin99 fatcat:3j2mqditpjgu7kogpvxvtlysjy

XPS a database server for data warehousing

Andreas Weininger
2001 Proceedings of the 4th ACM international workshop on Data warehousing and OLAP - DOLAP '01  
Therefore, in this paper we will look specifically at features necessary for efficiently processing queries on a database with a star schema model, a database schema which is used very often in data warehousing  ...  A database server used for implementing a data warehouse must support other features than a database server used for OLTP.  ...  In data warehousing there are often predicates which return a significant part of the data.  ... 
doi:10.1145/512236.512245 dblp:conf/dolap/Weininger01 fatcat:5fcy2xam35agxgciltedpqm3du

Big Data Design

Alberto Abelló
2015 Proceedings of the ACM Eighteenth International Workshop on Data Warehousing and OLAP - DOLAP '15  
Thus, the change in the data model and the new analytical needs beyond OLAP take us to rethink methods and models to design and manage these newborn repositories.  ...  In this paper, we will analyze state of the art and future research directions.  ...  Thus, the design paradigm has to evolve accordingly, and Star-join Schemas [7] are not appropriate anymore for Data Warehousing (DW).  ... 
doi:10.1145/2811222.2811235 dblp:conf/dolap/Abello15 fatcat:sizn67mdjjearotzqhvi22ih2i
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