Hi, This is my first posting and hope that you guys can help me. My knowledge of Database designing is reasonable but not at a professional level - I think!

I am building a database for multi location Theatre booking service providind printable booking vouchers to recognised users. The database will store information about the various shows ,showtimings, seat information in theatre and register purchaser bookings.
I have made following tables for MultiLocation Theatre booking service....Please check whether i have done correctly.
Am i using too many tables..


Any help would be greatly appreciated. You can email me privately at nazir.gazala@yahoo.com if it is too lengthy or complicated to post in the forum.
COMPANY:
CompanyId----Primary Key
CompanyName
CompanyAddress

THEATRE:
TheatreId----Primary Key
TheatreName
TheatreAddress

LOCATION:
LocationId----Primary Key
TheatreId----Foreign Key
LocationName
LocationAddress
ContactNo

SHOW:
ShowId----Primary Key
LocationId----Foreign Key
ShowName
ShowDuration

SHOWDAY:
DayId----Primary Key
Day

SHOWTIME:
TimeId----Primary Key
TimeHour
TimeMinute

SHOWSCHEDULE:
ShowId----Foreign Key
DayId----Foreign Key
TimeId----Foreign Key

SEATCLASS:
Class----Primary Key
Price

SEAT:
SeatNo----Primary Key
Class----Foreign Key
RowNo
ColNo

PURCHASER:
PurchaserId----Primary Key
PurchaserName
PurchaserAddress
PurchaserTelephone
PurchaserEmail

PURCHASERBOOKING:
PurchaserBookingId----Primary Key
PurchaserId----Foreign Key
ShowId----Foreign Key
DayId----Foreign Key
TimeId----Foreign Key
BookingTime

I have made following tables for MultiLocation Theatre booking service....Please check whether i have done correctly:
COMPANY:
CompanyId----Primary Key
CompanyName
CompanyAddress

THEATRE:
TheatreId----Primary Key
TheatreName
TheatreAddress

LOCATION:
LocationId----Primary Key
TheatreId----Foreign Key
LocationName
LocationAddress
ContactNo

SHOW:
ShowId----Primary Key
LocationId----Foreign Key
ShowName
ShowDuration

SHOWDAY:
DayId----Primary Key
Day

SHOWTIME:
TimeId----Primary Key
TimeHour
TimeMinute

SHOWSCHEDULE:
ShowId----Foreign Key
DayId----Foreign Key
TimeId----Foreign Key

SEATCLASS:
Class----Primary Key
Price

SEAT:
SeatNo----Primary Key
Class----Foreign Key
RowNo
ColNo

PURCHASER:
PurchaserId----Primary Key
PurchaserName
PurchaserAddress
PurchaserTelephone
PurchaserEmail

PURCHASERBOOKING:
PurchaserBookingId----Primary Key
PurchaserId----Foreign Key
ShowId----Foreign Key
DayId----Foreign Key
TimeId----Foreign Key
BookingTime