Research problems in data warehousing
CIKM '95 Proceedings of the fourth international conference on Information and knowledge management
Modelling Large Scale OLAP Scenarios
EDBT '98 Proceedings of the 6th International Conference on Extending Database Technology: Advances in Database Technology
A Logical Approach to Multidimensional Databases
EDBT '98 Proceedings of the 6th International Conference on Extending Database Technology: Advances in Database Technology
Modeling Multidimensional Databases
ICDE '97 Proceedings of the Thirteenth International Conference on Data Engineering
A Foundation for Multi-dimensional Databases
VLDB '97 Proceedings of the 23rd International Conference on Very Large Data Bases
Maintaining Data Cubes under Dimension Updates
ICDE '99 Proceedings of the 15th International Conference on Data Engineering
Efficient intensional redefinition of aggregation hierarchies in multidimensional databases
Proceedings of the 4th ACM international workshop on Data warehousing and OLAP
Efficiently synchronizing multidimensional schema data
Proceedings of the 4th ACM international workshop on Data warehousing and OLAP
A multidimensional and multiversion structure for OLAP applications
Proceedings of the 5th ACM international workshop on Data Warehousing and OLAP
Reasoning about Summarizability in Heterogeneous Multidimensional Schemas
ICDT '01 Proceedings of the 8th International Conference on Database Theory
VLDB '00 Proceedings of the 26th International Conference on Very Large Data Bases
Supporting Dimension Updates in an OLAP Server
CAiSE '02 Proceedings of the 14th International Conference on Advanced Information Systems Engineering
A Temporal Query Language for OLAP: Implementation and a Case Study
DBPL '01 Revised Papers from the 8th International Workshop on Database Programming Languages
Revising aggregation hierarchies in OLAP: a rule-based approach
Data & Knowledge Engineering - Special issue: Advances in OLAP
QC-trees: an efficient summary structure for semantic OLAP
Proceedings of the 2003 ACM SIGMOD international conference on Management of data
Time in multidimensional databases
Multidimensional databases
Creation and management of versions in multiversion data warehouse
Proceedings of the 2004 ACM symposium on Applied computing
Supporting dimension updates in an OLAP server
Information Systems - Special issue: The 14th international conference on advanced information systems engineering (CAiSE*02)
On querying versions of multiversion data warehouse
Proceedings of the 7th ACM international workshop on Data warehousing and OLAP
Aggregate queries in peer-to-peer OLAP
Proceedings of the 7th ACM international workshop on Data warehousing and OLAP
A multiversion model for multimedia data warehouse
MDM '05 Proceedings of the 6th international workshop on Multimedia data mining: mining integrated media and complex data
Design and development of a multiversion OLAP application
Proceedings of the 2006 ACM symposium on Applied computing
Handling multiple points of view in a multimedia data warehouse
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
Multimedia data warehouses: a multiversion model and a medical application
Multimedia Tools and Applications
On new roll-up possibilities for data stream warehouse
ACST'07 Proceedings of the third conference on IASTED International Conference: Advances in Computer Science and Technology
A user-driven data warehouse evolution approach for concurrent personalized analysis needs
Integrated Computer-Aided Engineering
Multiversion join index for multiversion data warehouse
Information and Software Technology
P2P OLAP: Data model, implementation and case study
Information Systems
Integrated Model-Driven Development of Goal-Oriented Data Warehouses and Data Marts
ER '08 Proceedings of the 27th International Conference on Conceptual Modeling
Adaptive Web SitesA Knowledge Extraction from Web Data Approach
Proceedings of the 2008 conference on Adaptive Web Sites: A Knowledge Extraction from Web Data Approach
A Knowledge-driven Data Warehouse Model for Analysis Evolution
Proceedings of the 2006 conference on Leading the Web in Concurrent Engineering: Next Generation Concurrent Engineering
Metadata management in a multiversion data warehouse
Journal on data semantics VIII
Enforcing strictness in integration of dimensions: beyond instance matching
Proceedings of the ACM 14th international workshop on Data Warehousing and OLAP
Repairing dimension hierarchies under inconsistent reclassification
ER'11 Proceedings of the 30th international conference on Advances in conceptual modeling: recent developments and new directions
Handling inconsistencies in data warehouses
EDBT'04 Proceedings of the 2004 international conference on Current Trends in Database Technology
A proposal for a multimedia data warehouse
MIS'05 Proceedings of the 11th international conference on Advances in Multimedia Information Systems
Metadata management in a multiversion data warehouse
OTM'05 Proceedings of the 2005 OTM Confederated international conference on On the Move to Meaningful Internet Systems: CoopIS, COA, and ODBASE - Volume Part II
Dynamic construction of user defined virtual cubes
NGITS'06 Proceedings of the 6th international conference on Next Generation Information Technologies and Systems
ADBIS'09 Proceedings of the 13th East European conference on Advances in Databases and Information Systems
Season queries on a temporal multidimensional model for OLAP
Mathematical and Computer Modelling: An International Journal
Repairing inconsistent dimensions in data warehouses
Data & Knowledge Engineering
Journal of Database Management
A multidimensional data model with subcategories for flexibly capturing summarizability
Proceedings of the 25th International Conference on Scientific and Statistical Database Management
Extended dimensions for cleaning and querying inconsistent data warehouses
Proceedings of the sixteenth international workshop on Data warehousing and OLAP
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OLAP systems support data analysis through a multidimensional data model, according to which data facts are viewed as points in a space of application-related “dimensions” , organized into levels which conform a hierarchy. Although the usual assumption is that these points reflect the dynamic aspect of the data warehouse while dimensions are relatively static, in practice it turns out that dimension updates are often necessary to adapt the multidimensional database to changing requirements. These updates can take place either at the structural level (e.g. addition of categories or modification of the hierarchical structure) or at the instance level (elements can be inserted, deleted, merged, etc.). They are poorly supported (or not supported at all) in current commercial systems and have not been addressed in the literature. In a previous paper we introduced a formal model supporting dimension updates. Here, we extend the model, adding a set of semantically meaningful operators which encapsulate common sequences of primitive dimension updates in a more efficient way. We also formally define two mappings (normalized and denormalized) from the multidimensional to the relational model, and compare an implementation of dimension updates using these two approaches.