On Order-Independent Semantics of the Similarity Group-By Relational Database Operator

Similarity Group-By (SGB) has been proposed as a relational database operator to match the needs of emerging database applications. Many SGB operators that extend SQL have been proposed in the literature, e.g., similarity operators in the one-dimensional space. These operators have various semantics. Depending on how these operators are implemented, some of the implementations may lead to different groupings of the data. Hence, if SQL code is ported from one database system to another, it is not guaranteed that the code will produce the same results.

Provided by: Purdue University Topic: Data Management Date Added: Dec 2014 Format: PDF

Find By Topic