-
+
Concurrency Control
releases locks acquired within it.
+
+
Compatibility of lock modes
+
+
+
+
+
+
+
+
+
+
+
+ |
+ Modes
+ AS
+ RS
+ RE
+ SUE
+ S
+ SRE
+ E
+ AE
+
+
+
+ |
+ AS
+ Y
+ Y
+ Y
+ Y
+ Y
+ Y
+ Y
+ N
+
+ |
+ RS
+ Y
+ Y
+ Y
+ Y
+ Y
+ Y
+ N
+ N
+
+ |
+ RE
+ Y
+ Y
+ Y
+ Y
+ N
+ N
+ N
+ N
+
+ |
+ SUE
+ Y
+ Y
+ Y
+ N
+ N
+ N
+ N
+ N
+
+ |
+ S
+ Y
+ Y
+ N
+ N
+ Y
+ N
+ N
+ N
+
+ |
+ SRE
+ Y
+ Y
+ N
+ N
+ N
+ N
+ N
+ N
+
+ |
+ E
+ Y
+ N
+ N
+ N
+ N
+ N
+ N
+ N
+
+ |
+ AE
+ N
+ N
+ N
+ N
+ N
+ N
+ N
+ N
+
+
+
+