datatype mediumBLOB should be OK.
Here http://dev.mysql.com/doc/mysql/en/storage-…quirements.html it says that that the mediumblob could store data sixes of 2 ^ 24 bytes. That is about 16 MB.
Do you use PHP or ASP or whatever ?? Could you provide some code example, that show which method you use to fetch the data ?
What is the purpose of your attachment ? We can't use it for two reasons:
1) you can't copy a mySQL Datafile (a.MYD-file) like was it for instance an Access database. The MYD-file will only have meaning with the server environment where it was created.
2) actually BLOBs are not stored within a table. Only a pointer is stored in the table. The binary data elsewhere …