The logical database design is called the "schema". It contains the tables, the table layout and the relationship between the tables. The design contains the contraints, such as foreign keys, and primary keys.
a logical database design is a good and logical design for the database you want to create. It should take as little room as possible though date being available fast.
The database design is create to web design for the language. it logic in the mind in this logical database design to the acess for the computer. it is logical data base design.