wants to create new table and insert data into it.Please help me bcz its structure too complex to understand.
I have create a class into

1>NOP.core/domain/abc/abc.cs      here i define the properties

after doing this i just map this by using

2>nop.data/mapping/abc/abcMap.cs

Now i have both the files 1,2 but whenever i execute my nopcommerce project.I never reflect changes in database or not create the new table with the name of abc .
now i don't knw what to do.Is there anybody who can help me. I am new here .