Technical Reports (Computing Science)
Technical Reports Collection
Items in this Collection
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1996
Ozsu, M. Tamer, Goralwalla, Iqbal, Li, John, Szafron, Duane
Technical report TR96-02. Video modeling has become a topic of increasing interest in the area of multimedia research. One of the key aspects in the video medium is the temporal relationship between video frames. In this report1 we propose a tree based model for specifying spatial and temporal...
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1998
Ozsu, M. Tamer, Szafron, Duane, Leontiev, Yuri
Technical report TR98-02. In this paper we present a model that supports a clean separation between the concepts of interface, implementation, and representation. We present several problems that are difficult to solve in the absence of such separation and describe how the proposed model can be...
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Temporality in Object Database Management Systems
1998
Technical report TR98-04. Conventional databases represent the state of an enterprise at one particular point in time. That is, they contain only current data. As a database changes, out-of-date information, representing past states of the enterprise, is discarded. However, temporal support is a...
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1993
Peters, Randal J., Ozsu, M. Tamer, Szafron, Duane, Lipka, Anna
Technical report TR93-01. The establishment of a formal object model provides a theoretical foundation to investigate other objectbase features such as query processing. In this report, we present an extensible uniform behavioral object query model for the TIGUKAT(*) object management system. ...
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Modeling and Querying Multimedia Data
1998
Technical report TR98-05. Amidst the dramatic developments of computer technology in the last decades, we have seen a growing interest in supporting multimedia data. Compared with traditional data, the most noticeable features of multimedia data are their spatiality (the spatial layout of...
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1996
Goralwalla, Iqbal, Ozsu, M. Tamer, Leontiev, Yuri, Szafron, Duane
Technical report TR96-03. Most of the work in modeling time in information systems has concentrated on issues such as support for historical information and providing query facilities to manipulate such information. In doing so, some simplistic view of the underling nature of time has been...
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1996
Li, John, Ozsu, M. Tamer, Szafron, Duane
Technical report TR96-12. Modeling moving objects has become a topic of increasing interest in the area of video databases. Two key aspects of such modeling are object spatial and temporal relationships. In this paper we introduce an innovative way to represent the trajectory of a single...
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1995
Szafron, Duane, Ozsu, M. Tamer, Li, John
Technical report TR95-25. Declarative query languages are an important feature of database management systems and have played an important role in their success. As database management technology enters the multimedia information system area, the availability of special-purpose query languages...
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1998
Leontiev, Yuri, Ozsu, M. Tamer, Szafron, Duane
Technical report TR98-01. In this paper we present a type system that combines inclusion and parametric polymorphism with behaviors (multi-methods) and precise function typing. Type declarations allow user-definable variance specification of type parameters and user-definable subtyping between...
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1994
Goralwalla, Iqbal, Ozsu, M. Tamer, Tansel, Abdullah
Technical report TR94-15. In this paper we describe an implementation of a temporal relational database management system based on attribute timestamping. For this purpose we modify an existing software which supports set-valued attributes. The algebraic language of the system includes...