September 2002
Intermediate to advanced
562 pages
27h 22m
English
Content preview from Advanced SQL:1999
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18 Chapter 1 Introduction to SQL:1999
9 Feature $231, "Structured type locators," assists in accessing UDT instances
from host programs.
9 Feature $241, "Transform functions," supports syntax allowing type defin-
ers to define routines that transform values between UDTs and SQL's pre-
defined data types.
The menagerie of SQL products on the marketplace has shrunk in recent years, as
the relational database industry consolidates. At the time that this volume was
written, Informix Software had recently been purchased by IBM, further reduc-
ing the number of independent players. (IBM announced that the Informix data-
base products that
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