I run a small database for a very small business. I am normalizing our database which keeps track of our orders for repairs.

I have one of the tables in 2NF but I am not sure how to normalize it further.

Here is an example of how it looks:

```
RMA_NUM | TYPE | MODEL_NUM | SERIAL_NUM
0000001 | ALPHA | ALPH-1000 | ALP-012345
0000001 | BETA | BETA-2000 | BET-000012
0000001 | DELTA | DELT-1400 | DEL-766652
0000234 | ALPHA | ALPH-1000 | ALP-134529
0000234 | DELTA | DELT-1400 | DEL-881625
0000255 | DELTA | DELT-3000 | DEL-182761
0000732 | ALPHA | ALPH-2000 | ALP-912761
0000732 | BETA | BETA-2000 | BET-238237
```

We have RMA numbers for each order. Another table contains RMA number indicating customer, PO number, date shipped, repair needed, etc. RMA_NUM is the primary key in both tables. This table represents multiple types/models for repair per RMA. Thus it was moved to its own table when I normalized the original table. How would I convert this into 3NF?

Thanks for your help.