diff --git b/Dia 3/EjericicioInterface.java a/Dia 3/EjericicioInterface.java
new file mode 100644
index 0000000..f92597d
--- /dev/null
+++ a/Dia 3/EjericicioInterface.java
@@ -0,0 +1,75 @@
+
+package bootcamp;
+
+
+
+interface formas {
+        
+    public boolean cuadrarTexto();
+    
+}
+
+class circulos implements formas {
+    private int radio;
+    private String color_cir;
+    private String palabrac;
+    
+   
+
+    public circulos (int radio,String color_cir,String palabrac) {
+        this.radio=radio;
+        this.color_cir = color_cir;
+        this.palabrac=palabrac;
+    }
+    
+    public boolean cuadrarTexto(){
+        
+       if (radio>=palabrac.length() ){
+           return true;
+       }else{
+            return false;
+       }
+    }   
+}
+
+class rectangulos implements formas {
+   private double longitud;
+   private double anchura;
+   private String color_rec;
+   private String palabrar;
+
+    public rectangulos(double longitud, double anchura, String color_rec, String palabrar) {
+        this.longitud = longitud;
+        this.anchura = anchura;
+        this.color_rec = color_rec;
+        this.palabrar = palabrar;
+    }
+     public boolean cuadrarTexto(){
+        
+       if (longitud>=palabrar.length() ){
+           return true;
+       }else{
+            return false;
+       }
+
+     }
+    
+}
+
+public class EjericicioInterface {
+     public static void main(String [ ] args){
+         circulos cir = new circulos(5,"Rojo","Paraguay") ;
+         System.out.println("Es mayor las letras que el radio en el circulo?"+cir.cuadrarTexto());
+                 
+       rectangulos rec = new rectangulos (10,8,"verder","Java");
+         System.out.println("Es mayor la longitud que la dimension de la palabra? "+rec.cuadrarTexto());
+                 
+         
+    } 
+}
+
+
+
+
+
+
diff --git b/Dia 3/miercoles20 bootcamp.txt a/Dia 3/miercoles20 bootcamp.txt
new file mode 100644
index 0000000..fe3a87d
--- /dev/null
+++ a/Dia 3/miercoles20 bootcamp.txt
@@ -0,0 +1,61 @@
+//1
+select customer.first_name from customer 
+join rental on customer.customer_id=rental.customer_id
+where customer.customer_id=rental.customer_id;
+
+//2
+select customer.first_name,film.title from customer 
+join rental on customer.customer_id=rental.customer_id
+join payment on  payment.rental_id=rental.rental_id
+join inventory on rental.inventory_id=inventory.inventory_id
+join film on inventory.film_id=film.film_id
+where customer.customer_id=rental.customer_id and rental.rental_id=payment.rental_id
+and rental.return_date<payment.payment_date;
+
+//3
+select category.name , Count(rental.rental_id) from rental
+join inventory on rental.inventory_id=inventory.inventory_id
+join film on inventory.film_id=film.film_id
+join film_category on film_category.film_id=film.film_id
+join category on category.category_id=film_category.category_id
+Group by category.name
+order by Count(rental.rental_id) desc;
+
+//4
+select cu.first_name,cu.customer_id , category.name , Count(rental.rental_id) from rental
+join inventory on rental.inventory_id=inventory.inventory_id
+join film on inventory.film_id=film.film_id
+join film_category on film_category.film_id=film.film_id
+join category on category.category_id=film_category.category_id
+join customer cu on cu.customer_id=rental.customer_id 
+Group by category.name,cu.customer_id
+order by Count(rental.rental_id) desc;
+
+//5
+Select lan.name,count(lan.language_id) from rental ren 
+join inventory inv on inv.inventory_id=ren.inventory_id
+join film fi on inv.film_id=fi.film_id
+join language lan on lan.language_id=fi.language_id
+group by lan.name;
+
+//6
+select st.first_name, count(r.rental_id) from staff st
+join payment pay on st.staff_id=pay.staff_id
+join rental r on r.rental_id=pay.rental_id
+group by st.first_name
+order by count(r.rental_id) desc; 
+
+//7
+select ac.actor_id,ac.first_name,count(rental_id)  from actor ac
+join film_actor fa on fa.actor_id=ac.actor_id
+join film f on f.film_id=fa.film_id 
+join inventory inv on inv.film_id=f.film_id
+join rental r on r.inventory_id=inv.inventory_id
+group by ac.first_name,ac.actor_id 
+order by count(r.rental_id) desc; 
+
+//8
+select cu.first_name,count(rental_id) from customer cu
+join rental r on cu.customer_id=r.customer_id
+group by cu.first_name
+order by count(r.rental_id) desc; 
\ No newline at end of file