Update index.md

Author: eroslevi

databases/index.md

@@ -31,12 +31,12 @@ lecture|IE.220|relational data model|september 22
 laboratory|building R|Oracle|september 25
 lecture|IE.220|physical storage|september 29
 tutorial|IE.220|relational data model|october 02
-BREAK|no class|october 06
+BREAK|no class|none|october 06
 laboratory|building R|SQL 1|october 09
 lecture|IE.220|physical storage|october 13
 tutorial|IE.220|physical storage|october 16
 lecture|IE.220|physical storage|october 20
-BREAK|no class|october 23
+BREAK|no class|none|october 23
 lecture|IE.220|optimization|october 27
 tutorial|IE.220|physical storage|october 30
 lecture|IE.220|transaction management november 03