diff --git a/BE_SGBD_LIBRARY.ddl b/BE_SGBD_LIBRARY.ddl
index 7b2ed0fb66c0e662ffe9d12f49349e3f035c5d53..a918fe93f73742492ba3b716dea952f56a9fe1b6 100644
--- a/BE_SGBD_LIBRARY.ddl
+++ b/BE_SGBD_LIBRARY.ddl
@@ -13,6 +13,7 @@
 -- ________________ 
 
 create database MAIN;
+USE MAIN;
 
 
 -- DBSpace Section
@@ -175,17 +176,11 @@ alter table interesse_par add constraint FKint_MOT
      foreign key (mot)
      references MOT_CLE;
 
-alter table LIVRE add constraint ID_LIVRE_CHK
-     check(exists(select * from PUBLICATION
-                  where PUBLICATION.ISBN = ISBN)); 
 
-alter table LIVRE add constraint ID_LIVRE_CHK
-     check(exists(select * from ecrit_par
-                  where ecrit_par.ISBN = ISBN)); 
 
-alter table PERIODIQUE add constraint ID_PERIODIQUE_CHK
-     check(exists(select * from PUBLICATION
-                  where PUBLICATION.ID_PER = ID_PER)); 
+
+
+
 
 alter table propose add constraint FKpro_UTI_FK
      foreign key (email)
@@ -199,10 +194,6 @@ alter table PUBLICATION add constraint FKou_est_un_FK
      foreign key (ID_PER)
      references PERIODIQUE;
 
-alter table PUBLICATION add constraint FKou_est_un_CHK
-     check((ID_PER not null)
-           or (ID_PER is null)); 
-
 alter table PUBLICATION add constraint FKou_encore_est_un_FK
      foreign key (ID_RAP)
      references RAPPORT;
@@ -211,13 +202,9 @@ alter table PUBLICATION add constraint FKest_un_FK
      foreign key (ISBN)
      references LIVRE;
 
-alter table RAPPORT add constraint ID_RAPPORT_CHK
-     check(exists(select * from PUBLICATION
-                  where PUBLICATION.ID_RAP = ID_RAP)); 
 
-alter table RAPPORT add constraint ID_RAPPORT_CHK
-     check(exists(select * from redige_par
-                  where redige_par.ID_RAP = ID_RAP)); 
+
+
 
 alter table redige_par add constraint FKred_RAP
      foreign key (ID_RAP)
@@ -315,7 +302,7 @@ create unique index ID_RAPPORT_IND
      on RAPPORT (ID_RAP);
 
 create unique index ID_redige_par_IND
-     on redige_par (id, nom);
+     on redige_par (ID_RAP, nom);
 
 create index FKred_Aut_IND
      on redige_par (nom);
diff --git a/MOD BD 2022-23 projets.pdf b/MOD BD 2022-23 projets.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..f50356093306885fc1dddd8d6b3c6f9b698e7c2a
Binary files /dev/null and b/MOD BD 2022-23 projets.pdf differ