diff --git a/schema.sql b/schema.sql
index 4980f28..64a6e47 100644
--- a/schema.sql
+++ b/schema.sql
@@ -139,3 +139,19 @@ CREATE TABLE PARTICIPAR_PRECOMPETENCIA(
     CONSTRAINT PARTICIPAR_PRECOMPETENCIA_PRECOMPETENCIA_FK FOREIGN KEY (ID_PRECOMPETENCIA) REFERENCES PRECOMPETENCIA(ID_PRECOMPETENCIA),
     CONSTRAINT PARTICIPAR_PRECOMPETENCIA_ATLETA_FK FOREIGN KEY (ID_ATLETA) REFERENCES ATLETA(ID_ATLETA)
 );
+
+CREATE TABLE PERTENECER(
+    ID_DELEGACION NUMBER,
+    ID_PAIS NUMBER,
+    CONSTRAINT PERTENECER_PK PRIMARY KEY (ID_DELEGACION, ID_PAIS),
+    CONSTRAINT PERTENECER_DELEGACION_FK FOREIGN KEY (ID_DELEGACION) REFERENCES DELEGACION(ID_DELEGACION),
+    CONSTRAINT PERTENECER_PAIS_FK FOREIGN KEY (ID_PAIS) REFERENCES PAIS(ID_PAIS)
+);
+
+CREATE TABLE COMPETER_POR(
+    ID_ATLETA NUMBER,
+    ID_DELEGACION NUMBER,
+    CONSTRAINT COMPETER_POR_PK PRIMARY KEY (ID_ATLETA, ID_DELEGACION),
+    CONSTRAINT COMPETER_POR_ATLETA_FK FOREIGN KEY (ID_ATLETA) REFERENCES ATLETA(ID_ATLETA),
+    CONSTRAINT COMPETER_POR_DELEGACION_FK FOREIGN KEY (ID_DELEGACION) REFERENCES DELEGACION(ID_DELEGACION)
+);