A study of object declustering strategies in parallel temporal object database systems
Information Sciences—Applications: An International Journal
Object and Log Management in Temporal Log-Only Object Database Systems
ADBIS '01 Proceedings of the 5th East European Conference on Advances in Databases and Information Systems
The Vagabond Approach to Logging and Recovery in Transaction-Time Temporal Object Database Systems
IEEE Transactions on Knowledge and Data Engineering
Supporting temporal text-containment queries in temporal document databases
Data & Knowledge Engineering
An effective indexing model to manage versioned objects in a digital library
Journal of Information Science
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In an object database system using logical OIDs, an OID index (OIDX) is necessary to map from logical OID to the physical location of an object. In a temporal object database system (TODB), this OIDX also contains the timestamps of the object versions. OIDX maintenance can be very costly, and can easy become the bottleneck of such a system. The main reason for this, is that in a TODB the OIDX needs to be updated every time an object is updated. In order to reduce the access costs, a new index structure, particularly suitable to TODB requirements, is necessary. In this paper, we describe an OIDX for TODBs, the Vagabond Temporal OID Index (VTOIDX). The main goals of the VTOIDX are: 1) support for temporal data, while still having index performance close to a non-temporal (one-version) database system, 2) efficient object-relational operation, and 3) flexible tertiary storage migration of partitions of the index. In this paper, we describe the physical organization and the operations of the VTOIDX.