摘要：
C# 复制代码 // Put the next line into the Declarations section. private System.Data.DataSet dataSet; private void MakeDataTables() { // Run all of the functions. MakeParentTable(); MakeChildTable(); Mak... 阅读全文
摘要：
A database table commonly has a column, or group of columns, that uniquely identifies each row in the table. This identifying column or group of columns is called the primary key. 一个数据表都有一个或者是若干个列，而每个... 阅读全文