Specifies the database to connect to. By default, bcp.exe connects to the user’s default database. If -d database_name and a three part name (database_name.schema.table, passed as the first parameter to bcp.exe) is specified, an error will occur because you cannot specify the database name twice.If database_name begins with a hyphen (-) or a forward slash (/), do not add a space between -d and the database name.