1. Go to sql management studio and your databse right click db-->Tasks-->detach go to C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\DATA(2files ".mdf and .ldf" files take)
2. go to 2013 server sql management studio -->attach both .mdf and ldf files
3. Create ur webapplication in 2013 site collection-->if any custom solutions,webparts etc add your site
4.using Powershell: Mount-SPContentDatabase -Name WSS_Contenet_2010 -WebApplication "http://webapp:2013"
2. go to 2013 server sql management studio -->attach both .mdf and ldf files
3. Create ur webapplication in 2013 site collection-->if any custom solutions,webparts etc add your site
4.using Powershell: Mount-SPContentDatabase -Name WSS_Contenet_2010 -WebApplication "http://webapp:2013"