当我尝试在BIDS中处理多维数据集时连接失败

There is probably a simple answer to this question but I do not have much experience with SQL Server/SSAS. I can connect to my local server PCNAME\SQLEXPRESS in SQL Server 2008. On that server I have made a database, some dimension tables, and a fact table that I intend to build a cube from.There is probably a simple answer to this quest