For each instrument, Funky Bizz will keep track of a unique instrument serial number as well as the instrument model and brand, the year when the instrument was made, and the age $($measured in years$)$ of the instrument.

The customers of Funky Bizz are bands. For each band, Funky Bizz will keep track of the unique band name and unique band identifier as well as the band's address, contact person's name, and multiple phone numbers.

Repair technicians maintain the instruments. For each technician, Funky Bizz will keep track of a unique SSN as well as a name, address, and multiple phone numbers.

Funky Bizz will record information about shows that its customer bands perform in$.$ For each show, it will keep track of a unique show identifier composed of the show venue name and date. For each show, it will also keep track of show type and show name $($a show may or may not have a name$).$

A band does not have to rent any instruments, but may rent up to $30.$ Each instrument may be rented by one band or by no bands at all.

A repair technician maintains one or many instruments. Each instrument is maintained by one technician.

A band may perform in many shows, but does not have to perform in any. Each show must have at least one band performing, but may have many bands performing. For each instance of a band performing in a show, we keep track of the duration $($in minutes$)$ of that band's performance in that show.

For each band, Funky Bizz keeps track of the number of shows that the band performs in$.$

For each show, Funky Bizz keeps track of the number of bands that participated in the show.