My most baseic datbase has the following:

HORSENAME
LASTSTARTS
RATING
LOCATION
CONDITION
FINISHED
PRICEWIN
PRICEPLACE
WIN
PLACE
LASTSTART
JOCKEY
BARRIER
WEIGHT
SPECIALS
OUTSIDECOUNT
POSITIONRELATIVE
FIELDSIZE
BRATING
DISTANCE
STRAIGHT
NUMBERHORSE
PRIZEMONEY
TOTALRACES
TOTALWINS
TOTALSECS
TOTALTHIRDS
WETRACES
WETWINS
WETSECS
WETTHIRDS
TRACKRACES
TRACKWINS
TRACKSECS
TRACKTHIRDS
DISTRACES
DISTWINS
DISTSECS
DISTTHIRDS
FIRSTRACES
FIRSTWINS
FIRSTSECS
FIRSTTHIRDS
LAST1FIELD
LAST1LOCATION
LAST1CONDITION
LAST1DATE
LAST1DIST
LAST1CLASS
LAST1JOCKEY
LAST1BARRIER
LAST1WEIGHT
LAST1WINNER
LAST1BL
LAST1TIME
LAST1TIMESECS
LAST2FIELD
LAST2LOCATION
LAST2CONDITION
LAST2DATE
LAST2DIST
LAST2CLASS
LAST2JOCKEY
LAST2BARRIER
LAST2WEIGHT
LAST2WINNER
LAST2BL
LAST2TIME
LAST2TIMESECS
LAST3FIELD
LAST3LOCATION
LAST3CONDITION
LAST3DATE
LAST3DIST
LAST3CLASS
LAST3JOCKEY
LAST3BARRIER
LAST3WEIGHT
LAST3WINNER
LAST3BL
LAST3TIME
LAST3TIMESECS
LAST1POSITION
LAST2POSITION
LAST3POSITION
LAST1PRICE
LAST2PRICE
LAST3PRICE
WEIGHTRATING
LASTSTARTRATING
RATINGRATING
MYRATING
NUMBERRATING
DTRACED
DAYRACED
RADIOTIP1
RADIOTIP2
RADIOTIP3
RADIOTIP4
OTHERTIP4
OTHERTIP3
OTHERTIP2
OTHERTIP1
OTHERTIPSTER
LATEMAIL
MARKETPERCENTAGE
TOTALMARKET
FIRSTUPPERS
WINRANK
APIRANK
PLACERANK
WINTIME
TODAYSLOCATION
LAST3TIMEADJUSTED
LAST2TIMEADJUSTED
LAST1TIMEADJUSTED
AVGTIMEADJUSTED
BESTTIMEADJUSTED
BESTRANK
AVGRANK
LASTRANK

Good Luck.