Schema evolution in OODBs using class versioning
ACM SIGMOD Record
Rich base schema (RiBS)1: a unified framework for OODB schema version management
Journal of Database Management
A Transparent Schema-Evolution System Based on Object-Oriented View Technology
IEEE Transactions on Knowledge and Data Engineering
Versions of Schema for Object-Oriented Databases
VLDB '88 Proceedings of the 14th International Conference on Very Large Data Bases
A Taxonomy for Schema Versioning Based on the Relational and Entity Relationship Models
ER '93 Proceedings of the 12th International Conference on the Entity-Relationship Approach: Entity-Relationship Approach
A formal model for temporal schema versioning in object-oriented databases
Data & Knowledge Engineering
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In this paper, we propose a set of schema change operations which allows to restructure complex object hierarchy in object-oriented databases. This model extends a schema version model, called RiBS, which is based on the concept of Rich Base Schema. In the RiBS model, each schema version is in the form of updatable class hierarchy view over one base schema, called the RiBS layer, which has richer schema information than any existing schema version in the database. In this paper, we introduce new operations for restructuring composite object hierarchy in schema versions, and explain their semantics. The originality of this paper lies in that 1) we introduce several new operations to restructure composite object hierarchy, and 2) this extended RiBS model operations raise the concept of data independence in OODBs upto the schema level.