-- Critical part of DB2 -- Application Programming Interface (API) is a set of routines, protocols, and tools for building software applications. A good API makes it easier to develop a program by providing all the building blocks. A programmer puts the blocks together.-- First comprehensive reference -- This will be the first book available for DB2 Universal Database application developers that want to write applications using the Application programming Interface functions that are provided with DB2.-- DB2 Market Share -- IBM"s DB2 database took the lead in the database market in license revenue for 1998. Now controlling 32.3% of the market.