add DB notes

db.md

@@ -0,0 +1,41 @@
+
+
+```
+influxdb
+
+{
+  timestamp, // the deadline
+  version,
+  type: "task", // to prepare for calendar events
+  repeatRule: {
+    type: "single|date|period|series",
+    value,
+    lastItiration
+  },
+  lable
+}
+
+repeatRule:
+  single: |
+    value is not used
+    lastItiration is the date added
+  date: |
+    value is de time between reapeats
+      <number> day(s)
+      <number> week(s) [day <string:day of week>]
+      <number> month(s) [date <number:day of month>]
+      <number> quarter(s) [(month|date) <number> [end|begin]]
+      <number> year(s) [(month|date) <number>]
+  period:
+    a period after the last time done
+      <number> day(s)
+      <number> week(s) [day <string:day of week>]
+      <number> month(s) [date <number:day of month>]
+      <number> quarter(s) [(month|date) <number>]
+      <number> year(s) [(month|date) <number>]
+  series:
+    a list of timestamps it happends
+
+
+
+```