title: ERROR attaching adventureworks2012_data.mdf file with sql server 2012
body: <p>I have been trying to add adventure works database to my SQL server 2012..I tried to attach the database using SQL Server Management Studio as follows: I Right Clicked  on Databases > Attach and clicked  Add... > selected the AdventureWorks2012_Data file.  and then I Selected the log file and removed the log file by clicking on the Remove button then clicked OK but I still get an error that the header file is not a valid database header file and the FILESIZE property is incorrect ......please help me</p>