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2023-06-14 14:39:28 +08:00 · 2023-06-14 14:39:28 +08:00 · 0220f8f050
parent d51b8338d7
commit 0220f8f050
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--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@ -982,6 +982,11 @@
 							- Process of minimizing differences between
 							  entities by identifying their common
 							  characteristics.
+						- Two constraints that may apply to a
+						  specialization/generalization:
+							- participation constraints
+							- disjoint constraints
+					-
 				- LATER designing ER diagram
 			- DONE Block 3
 			  collapsed:: true