Base Client interface

The Base Client interface consists primarily of concrete implementations of abstract classes; discussions of these concrete classes appear throughout the following chapters.

The main difference between the Base and Extended Client interfaces is that Extended Client SQL commands are not parsed by SQLDAS. Extended Client SQL provides the same generality and portability as Base Client SQL, but improves performance by minimizing unneeded parsing and translation. The responsibility for generating the proper SQL commands rests with the client application, which must construct appropriate SQL commands using SQL fragments provided by the SQLDAS parameter dictionary. Discussions of the classes used by the Extended Client interface appear throughout the following chapters.