Tripod: a comprehensive system for the management of spatial and aspatial historical objects
Proceedings of the 9th ACM international symposium on Advances in geographic information systems
Database research at UT Arlington
ACM SIGMOD Record
Design Issues in Transaction-Time Temporal Object Database Systems
ADBIS-DASFAA '00 Proceedings of the East-European Conference on Advances in Databases and Information Systems Held Jointly with International Conference on Database Systems for Advanced Applications: Current Issues in Databases and Information Systems
Algorithms for Temporal Query Operators in XML Databases
EDBT '02 Proceedings of the Worshops XMLDM, MDDE, and YRWS on XML-Based Data Management and Multimedia Engineering-Revised Papers
Data & Knowledge Engineering
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One of the main reasons that current commercial DBMSs provide only minimal support for temporal concepts is the size and complexity involved. Object-oriented databases, on the other hand, were developed to deal with complex database applications. Because temporal concepts require complex type support and advanced modeling concepts, object-oriented databases are excellent candidates for realization of temporal databases without requiring fundamental extensions to the basic data model.The ODMG (Object Data Management Group) has proposed a standard for object-oriented databases, including a standard object model, an object query language (OQL), and an object definition language (ODL). These do not include temporal support except at the data type level, as in SQL2. In this paper, we present a language extension to OQL to accommodate time information. Our goal is not to propose a new temporal query language, but to incorporate temporal features into the existing OQL framework.