On An Algebra For Historical Relational Databases: Two Views

  title={On An Algebra For Historical Relational Databases: Two Views},
  author={James Clifford and Abdullah Uz Tansel},
  booktitle={SIGMOD Conference},
In search of the appropriate semantics -for the inclusion of structures and operations that ~111 meet the needs of a wide class of users interested in a database system supporting temporal views of their data, the paper includes both a discussion of many problems that must be addressed, and a proposal for an extended relational algebra The informal dlscusslon of Issues motivates the proposal to time-stamp the attributes of relations, rather than the tuples The proposed algebra incorporates this… CONTINUE READING
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