【摘要】 在数据库应用开发过程中,经常要处理大量的大数据类型(如图形、声音文件或带格式的大文本文件等),如何处理这些数据是开发人员所面临的1个难题。本文阐明了在VC中利用OO4O包含的OracleC++ClassLibrary提供的一些基本类库来处理大数据类型的1种高效方法,并以处理Longraw数据类型和基本数据类型为例进行了比较说明。更多还原

【Abstract】 During the development and application of database,a lot of Longrow type data (graphic file,sound file and large text file etc.)would be processed.How to operate these data efficiently and quickly is a major problem to developers.This paper describes a high efficiency method to access Oracle’s Longraw type data by using Oracle C++ Class Library provided by OO4O in Visual C++.Two examples of processing Longraw type data and common type data are given to show the differences between them.更多还原