Six entities include: Cars, Sellers, Buyers, Dealerships, Transactions, and Reviews

Cars: Make, Model, Year, Mileage, Price, Color, Fuel Type, Transmission,

Sellers: Name, Contact Information, Location, Rating, Joining Date

Buyers: Name, Contact Information, Location, Wishlist, Joining Date

Dealerships: Name, Location, Contact Information, Ratings, Inventory

Transactions: Transaction ID$,$ Car ID$,$ Seller ID$,$ Buyer ID$,$ Transaction Date, Amount, Payment Method

Reviews: Review ID$,$ Car ID$,$ Reviewer ID$,$ Rating, Comment, Date

Create a data model that includes conceptual, logical$,$ and physical models