Often the technology in question is custom application logic that you wrote yourself to extract data from an XML document and put it into a column on a table in a relational database.
这种技术通常需要自己编写自定义的应用程序逻辑从XML文档中提取数据，然后放到关系数据库的表列中。
2
The column index must be found to extract the textual contents of the column.
必须找到列索引来提取该列的文本内容。
3
You'll use Design Studio to extract data stored in one DB2 XML column and map this data to two tables in a DB2 data warehouse, as shown in Figure 2.