怎样在一个程序中连接两个数据库

来源：作者：出处：巧巧读书 2006-09-02 进入讨论组

关键词：
window
数据库

　　问：SOS 怎样在一个程序中连接两个数据库？数据库在两台机器中，一个是SQL6.5，一个是SQL7.0。

答：

你可以这么做
Transaction mytrans1,mytrans2
mytrans1=Create Transaction
mytrans2=Create Transaction
mytrans1.DBMS="驱动程序类型"
mytrans1.DBParm="这里填连接Sql6.5的字串"
mytrans2.DBMS="驱动程序类型"
mytrans1.DBParm="这里填连接Sql7.0的字串"
connect using mytrans1;
connect using mytrans2;
剩下的你知道该怎么做了？

eg:
Transaction mytrans1,mytrans2
mytrans1=Create Transaction
mytrans2=Create Transaction
mytrans1.DBMS = "ODBC"
mytrans1.AutoCommit = False
mytrans1.DBParm = "ConnectString='DSN=YourDsnforSql6.5DB'"
connect using mytrans1;
IF mytrans1.sqlcode = -1 THEN
Messagebox("",Yourmessage)
disconnect using mytrans1;
halt
end if

mytrans2.DBMS = "ODBC"
mytrans2.AutoCommit = False
mytrans2.DBParm = "ConnectString='DSN=YourDsnforSql7.0DB'"
connect using mytrans2;
IF mytrans2.sqlcode = -1 THEN
Messagebox("",Yourmessage)
disconnect using mytrans2;
halt
end if

//If t65 is a table in your sql6.5 Database,t70 is a table in your sql7.0 Database and
//dw_1 and dw_2 are DataWindow Control ,dwo_sql65 and dwo_sql70 are respectedly DataWindow Object
//for t65 and t70 then
dw_1.dataobject="dwo_sql65"
dw_1.settransobject(mytrans1)
dw_1.retrieve()//It is best to test error
dw_2.dataobject="dwo_sql70"
dw_2.settransobject(mytrans2)
dw_2.retrieve()//It's the same as above
//Then ,you can manipulate the data by dw_1 and dw_2
//Do you understand?

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