Hello again, I need more help with a Information system I am constructing in my COBOL class. I'll begin with a explaination...

I started with a data dictionary file which I named 'NBADATADIC'
Code:
 FMT A* .....A*. 1 ...+... 2 ...+... 3 ...+... 4 ...+... 5 ...+... 6 ...+... 7
        *************** Beginning of data ************************************
0001.00       *
0002.00       *  Data Dictionary for NATIONAL BASKETBALL
0003.00       *
0004.00      A          R RECORD
0005.00      A            ASSISTPG       2S 0       TEXT('ASSISTS PER GAME')
0006.00      A            BLOCKSPG       2S 0       TEXT('BLOCKS PER GAME')
0007.00      A            FGPERCENT      2S 0       TEXT('FIELD GOAL PERCENT')
0008.00      A            FTPERCENT      2S 0       TEXT('FREE THROW PERCENT')
0009.00      A            GMSPLAYED      2S 0       TEXT('GAMES PLAYED')
0010.00      A            GMSSTART       2S 0       TEXT('GAMES STARTED')
0011.00      A            MINPG          2S 0       TEXT('MINUTES PER GAME')
0012.00      A            PLAYERNAME    18A         TEXT('PLAYER NAME')
0013.00      A            PLAYERPOS      2A         TEXT('POSITION CODE')
0014.00      A            POSITION       7A         TEXT('POSTION DESC.')
0015.00      A            PPG            2S 0       TEXT('POINTS PER GAME')
0016.00      A            STLPG          2S 0       TEXT('STEALS PER GAME')
0017.00      A            TEAMCODE       3A         TEXT('TEAM CODE')
0018.00      A            TEAMNAME      11A         TEXT('TEAM NAME')
0019.00      A            TEAMCONF       4A         TEXT('TEAM CONFRENCE')
0020.00      A            THREEPTP       2S 0       TEXT('THREE PT PERCENT')
0021.00      A            TURNOVERS      2S 0       TEXT('TURNOVERS')
        ****************** End of data *************************************
....that seems alright. Do I add information in there now ? Do I compile it first (crtpf), or do I do the entry (strdfu) now ?
Then I still need to add two physical files. But with those physical file I need to join them with a logical file and that is where I am begging to get confused. I have a logical file named 'NBAJOIN' that should join two physical files 'NB'ATEAM' and 'NBAPOSTN'. This is what they look like...
Code:
 FMT PF .....A..........T.Name++++++RLen++TDpB......Functions++++++++++++++++++
        *************** Beginning of data *************************************
0001.00      A                                      REF(NBADATADIC)
0002.00      A          R NBATEAM
0003.00      A            TEAMCODE  R
0004.00      A            TEAMNAME  R
0005.00      A            TEAMCONF  R
        ****************** End of data ****************************************
.....and........
Code:
 FMT PF .....A..........T.Name++++++RLen++TDpB......Functions++++++++++++++++++
        *************** Beginning of data *************************************
0001.00      A                                      REF(NBADATADIC)
0002.00      A          R NBAPOSTN
0003.00      A            PLAYERPOS R
0004.00      A            POSITION  R
        ****************** End of data ****************************************