Items to be displayed are indicated with a check mark “✓”. These check marks may be toggled on/off as desired. The query path may be restricted in various ways by the use of operators and conditions. As a
PL/SQL Logical Operators - Explore the various logical operators in PL/SQL, including AND, OR, and NOT. Learn how to effectively use these operators in your database queries.
As an example, we discuss how our model supports the definition of geographical DBMSs. Moreover, to show the generality of our approach, we sketch how the model can be used in the framework of statistical applications.doi:10.1016/0306-4379(91)90020-AM Gargano...
Pedreschi. Composing Operators for Logic Theories. In J. W. Lloyd, editor, Computational Logic, pages 117–134. Springer-Verlag, Berlin, 1990. Google Scholar A. D. Burt, P. M. Hill, and J. W. Lloyd. Preliminary Report on the Logic Programming Language Gödel. Technical Report TR 90...
The query language is a conservative extension of relational algebra where special operators allow the specification of queries over contexts.doi:10.1007/978-3-7908-2404-9_25Davide MartinenghiRiccardo TorloneD. Martinenghi, R. Torlone, A logical approach to context-aware databases, Springer, 2010....
Users can connect data sources of the same DBMS on the same island. However, when combining data from different islands, users must use special operators to deal with each island’s different data models and query languages. MusQ [22] is a A multi-Store Query System for IoT Data that ...