MapMerge: Correlating Independent Schema Mappings

One of the main steps towards integration or exchange of data is to design the mappings that describe the (often complex) relationships between the source schemas or formats and the desired target schema. In this paper, we introduce a new operator, called MapMerge, that can be used to correlate multiple, independently designed schema mappings of smaller scope into larger schema mappings. This allows a more modular construction of complex mappings from various types of smaller mappings such as schema correspondences produced by a schema matcher or pre-existing mappings that were designed by either a human user or via mapping tools. In particular, the new operator also enables a new “divideand-merge” paradigm for mapping creation, where the design is divided (on purpose) into smaller components that are easier to create and understand, and where MapMerge is used to automatically generate a meaningful overall mapping. We describe our MapMerge algorithm and demonstrate the feasibility...

• Type: Journal
• Year: 2010
• Where: PVLDB
• Authors: Bogdan Alexe, Mauricio A. Hernández, Lucian Popa, Wang Chiew Tan
• Keywords: Larger Schema Mappings, Mappings, PVLDB 2010, Schema Mappings