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  1. No Access

    Reference Work Entry In depth

    Temporal Algebras

    Abdullah Uz Tansel in Encyclopedia of Database Systems (2018)

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    Living Reference Work Entry In depth

    Temporal Algebras

    Abdullah Uz Tansel in Encyclopedia of Database Systems

  3. No Access

    Book

    Recommendation and Search in Social Networks

    Özgür Ulusoy, Abdullah Uz Tansel… in Lecture Notes in Social Networks (2015)

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    Reference Work Entry In depth

    Temporal Algebras

    Abdullah Uz Tansel in Encyclopedia of Database Systems (2009)

  5. No Access

    Chapter and Conference Paper

    Nested Bitemporal Relational Algebra

    We introduce a nested bitemporal relational data model that allows arbitrary levels of nesting. Bitemporal data is attached to attributes. The fundamental construct for representing temporal data is a bitempor...

    Abdullah Uz Tansel, Canan Eren Atay in Computer and Information Sciences – ISCIS 2006 (2006)

  6. No Access

    Chapter and Conference Paper

    Temporality in Databases

    Temporality, or the time dimension is an essential aspect of the reality databases attempt to model and keep data about. However, in many database applications temporal data is treated in a rather ad hoc manne...

    Abdullah Uz Tansel in Advances in Information Systems (2005)

  7. No Access

    Chapter and Conference Paper

    Temporal Data Modeling and Integrity Constraints in Relational Databases,

    We address the key issues of temporal data modeling and temporal integrity constraints in the temporal extensions to the relational data model in attribute and tuple time stam**. These issues include represe...

    Abdullah Uz Tansel in Computer and Information Sciences - ISCIS 2004 (2004)

  8. No Access

    Chapter

    Expressive power of temporal relational query languages and temporal completeness

    In this paper, we consider the representation of temporal data based on tuple and attribute timestam**. We identify the requirements of temporal data and elaborate on their implications. We introduce a tempo...

    Abdullah Uz Tansel, Erkan Tin in Temporal Databases: Research and Practice (1998)

  9. No Access

    Article

    Query languages for statistical databases

    Statistical database management systems keep raw, elementary and/or aggregated data and include query languages with facilities to calculate various statistics from this data. In this article we examine statis...

    Abdullah Uz Tansel in Statistics and Computing (1995)