Q:Question:I want the solution in SQL developer program This all information I have /r/n Section A: DDL and Relational Algebra (7marks) 1. Create the database by using SQL DDL commands and fill the tables with at least 3 rows. /r/n 2. Code solutions to the following problems as a relationalalgebraic expression: (2marks) a. Display all patients' names who have an appointment on 1-1-2020 b. Find dentists number and name who have 10 years of service andA:Answer:Section A) 2) a) SELECT patName FROM Patient WHERE...