Consider the following relational database schema for booking hotel rooms:Hotel (hotelNo , hotelName, city)Room (roomNo, hotelNo , type, price)Booking (hotelNo, guestNo, dateFrom , dateTo, roomNo)Guest (guestNo, guestName, guestAddress)whereHotel contains hotel details and hotelNo is the primary key;Room contains room details for each hotel and ( roomNo, HotelNo) forms the primary key;Booking contains details of bookings and ( HotelNo, GuestNo, dateFrom) forms the primary key;Guest contains guest details and guestNo is the primary key. Generate the relational algebra for the following queries:1. List all hotels2. List all single rooms with a price below $20 per night3. List the names and cities of all guests4. List the price and type of all rooms at the Grosvenor Hotel5. List all guests currently staying at Grosvenor Hotel.6. List the names of the guests currently having a booking.7. List the details of all rooms at the Grosvenor Hotel, including the name of the guest staying in the room, if the room is occupied.8. List the guest details (guestNo, guestName, and guestAddress) of all guests staying at the Grosvenor Hotel.