diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index f5ffc75..2c64c00 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -1004,8 +1004,7 @@
 						  id:: 6489683b-7d47-4246-afdf-83fdb35a00f6
 							- There are attributes that apply to some (but not all) instances of an entity.
 							- The instances of a potential subclass participate in a relationship unique to that subclass.
-					- LATER SQL
-					- LATER Designing databases
+					- DONE Designing databases
 						- Understand Database Design Methodology #flashcard
 							- Conceptual database design
 								- The process of constructing a model of the data used in an enterprise, independent of all physical considerations.
@@ -1013,11 +1012,13 @@
 								- Maps the conceptual data model on to a logical model (e.g. relational), but independent of a particular DBMS and other physical considerations.
 							- Physical database design
 								- The process of producing a description of the implementation of the database (tailored to specific DBMS);
-						- general steps for Database Design Methodology.
+						- general steps for Database Design Methodology. #flashcard
 							- Gather requirements
 							- Conceptual database design
 							- Logical database design
 							- Physical database design
+					- LATER SQL
+						- purpose and importance of SQL.
 			- DONE Block 3
 			  collapsed:: true
 				- DONE DB transaction management