A global object model for accommodating instance heterogeneities

• Main Authors: LIM, Ee Peng, CHIANG, Roger Hsiang-Li
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 1998
• Subjects: Databases and Information Systems; Numerical Analysis and Scientific Computing
• Online Access: https://ink.library.smu.edu.sg/sis_research/972; https://ink.library.smu.edu.sg/context/sis_research/article/1971/viewcontent/Lim_Chiang1998_Chapter_AGlobalObjectModelForAccommoda.pdf
• Institution: Singapore Management University

To completely address database integration problems in the context of multidatabase [10] and data warehousing systems, one has to examine various integration and query requirements. Due to various reasons such as poor data quality in local databases, ongoing local database updates, and instance heterogeneities, some instance differences have to be accommodated by the integrated databases. We have therefore proposed a new object-oriented global data model, called OORA, that can accommodate attribute and relationship instance heterogeneities in the integrated database. In addition, the OORA model has been designed to allow database integrators and end users to query both the local and resolved instance values using the same query language.