Krishna G. Kulkarni

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This docuinent specifies a temporal extension to the SQL-92 language standard. The language is designated TSQLZ. The document is organized as follows. The next section indicates the starting point of the design, the SQL92 language. Section 4 lists the desired features on which the TSQL2 Language Design Committee reached consensus. Section 5 presents the(More)
SQL:2003 has finally achieved final publication as an International Standard, replacing SQL:1999. SQL:2003 is popularly believed to be largely a “bugfix release” of the SQL standard — except, of course, for the SQL/XML work on which we have previously reported. However, as you will learn from this and future columns, there are many compelling new features(More)
This tutorial presents the primary constructs of the consensus temporal query language TSQL2 via a media planning scenario. Media planning is a series of decisions involved in the delivery of a promotional message via mass media. We will follow the planning of a particular advertising campaign. We introduce the scenario by identifying the marketing(More)
SQL3 is a new database language standard being developed by both ANSI X3H2 and 1S0 DBL committees for the last three years. SQL3 is upward compatible with SQL-92, the current ANSI/ISO database language standard, and is targeted for completion in 1997. SQL3 extends SQL-92 in many significant ways, one of the major extensions being the addition of an(More)
In March, 2001, we delivered a (partly) guested column covering the topic of Management of External Data [1]. The column you are reading right now reports on the on-going development of the SQL/MED standard and is authored by all but one of the authors of that earlier column. We trust that our readers will benefit from this update on an interesting and(More)
In late 2000, work was completed on yet another part of the SQL standard [1], to which we introduced our readers in an earlier edition of this column [2].Although SQL database systems manage an enormous amount of data, it certainly has no monopoly on that task. Tremendous amounts of data remain in ordinary operating system files, in network and hierarchical(More)