diff --git a/.gitignore b/.gitignore
index 894cfc1..a63783e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
-*.bak*
\ No newline at end of file
+*.bak*
+*.lck
\ No newline at end of file
diff --git a/Docs/DB/schema.db b/Docs/DB/schema.db
index e2c3e12..729afc8 100644
--- a/Docs/DB/schema.db
+++ b/Docs/DB/schema.db
@@ -1,30 +1,36 @@
 https://dbdiagram.io/d/
 
 
-Table "user" {
-  "id" INT(10) [pk]
-  "name" VARCHAR(20)
-  "forename" VARCHAR(20)
-  "password" VARCHAR(20)
-  "token" VARCHAR(20)
-  "is_admin" BIT
-}
-
 Table "event" {
-  "id" INT(10) [pk]
-  "name" VARCHAR(20)
-  "priority" TINYINT(2)
-  "is_full_day" BIT
-  "start" TIME
-  "end" TIME
+  "id" bigint(20) [pk, not null, increment]
+  "name" varchar(255) [default: NULL]
+  "start" time [default: NULL]
+  "end" time [default: NULL]
+  "is_full_day" bit(1) [not null]
+  "is_private" bit(1) [not null]
+  "priority" int(11) [default: NULL]
 }
 
-Table "event_list" {
-  "id" INT(10) [pk]
-  "user_id" NT(10)
-  "event_id" NT(10)
-  "date" date
+Table "user" {
+  "id" bigint(20) [pk, not null, increment]
+  "forename" varchar(255) [default: NULL]
+  "name" varchar(255) [default: NULL]
+  "is_admin" bit(1) [not null]
+  "password" varchar(255) [default: NULL]
+  "token" varchar(255) [default: NULL]
 }
 
-Ref:"event_list"."user_id" < "user"."id"
-Ref:"event_list"."event_id" < "event"."id"
\ No newline at end of file
+Table "user_event" {
+  "date" date [not null, default: `curdate()`]
+  "event_id" bigint(20) [not null]
+  "user_id" bigint(20) [not null]
+
+Indexes {
+  event_id [name: "FKspe8srtv69gubpphvrnd7wekt"]
+  user_id [name: "FKk3smcqwou8absq8qjt3wk4vy9"]
+  (date, event_id, user_id) [pk]
+}
+}
+
+Ref:"event"."id" < "user_event"."event_id"
+Ref:"user"."id" < "user_event"."user_id"
\ No newline at end of file
diff --git a/Docs/DB/schema.png b/Docs/DB/schema.png
index bd05eff..a2b36c0 100644
Binary files a/Docs/DB/schema.png and b/Docs/DB/schema.png differ
diff --git a/Docs/REST-API/API Reference.md b/Docs/REST-API/API Reference.md
new file mode 100644
index 0000000..bfca8d9
--- /dev/null
+++ b/Docs/REST-API/API Reference.md	
@@ -0,0 +1,113 @@
+# API Reference
+
+The vpr Api ist created around REST. Our Api has several different endpoint, that are URL based and accept standard form-encoded request bodies.
+It returns JSON-encoded responses and uses standard HTTP response codes.
+
+---
+
+## The Endpoints at "/vpr/"
+GET:
+- /all-users
+  
+POST:
+- /all-events
+- /add-user
+- /add-event
+- /del-event
+
+---
+
+## Status-codes dan HTTP-responses
+
+| STATUS | meaning |
+| --- | --- |
+| 200 | OK. The Request was successful |
+| 400 | Bad request. Check if you send all parameter |
+| 404 | endpoint not found. The Url might contain a spelling mistake |
+| 405 | Request-Method not allowed. Check if the endpoint requires an GET or POST request |
+| 500 | Internal Server error. The request failed due to an exception at the server, the Request-parameter might be in a wrong format, or the database might be unreachable |
+
+---
+
+## /all-users
+
+Request (GET):
+
+    curl localhost:8080/vpr/all-users
+
+Response:
+
+    [
+        [
+            userId: int, 
+            forename: string, 
+            name: string 
+        ]
+    ]
+
+---
+
+## /all-events
+
+Request (POST):
+
+    curl localhost:8080/vpr/all-events -X POST -d "userId=<int>"
+
+Response:
+
+    [
+        [
+            eventId: int, 
+            name: string, 
+            start: string, 
+            priority: int,
+            isFullDay: boolean,
+            date: string,
+            userId: int, 
+            forename: string, 
+            name: string 
+            
+        ]
+    ]
+
+---
+
+## /add-user
+
+Request (POST):
+
+    curl localhost:8080/vpr/add-user -X POST -d "name=<string>&forename=<string>&password=<string>&isAdmin=<boolean>"
+
+Response:
+
+    status 200 if request is ok
+    
+    And String "Saved"
+
+---
+
+## /add-event
+
+Request (POST):
+
+    curl localhost:8080/vpr/add-event -X POST -d "userId=<String>&date=<String>&name=<String>&start=<String>&end=<String>&prority=<int>&isFullDay=<boolean>&isPrivate=<boolean>"
+
+Response:
+
+    status 200 if request is ok
+    
+    And String "Saved"
+
+---
+
+## /del-event
+
+Request (POST):
+
+    curl localhost:8080/vpr/del-event -X POST -d "eventId=<int>"
+
+Response:
+
+    status 200 if request is ok
+
+    And String "Deleted"
\ No newline at end of file
diff --git a/Docs/coding guide.md b/Docs/coding guide.md
index a77adf9..c5cc8c8 100644
--- a/Docs/coding guide.md	
+++ b/Docs/coding guide.md	
@@ -1,6 +1,6 @@
 # 1 Formatting
 ## 1.1 General
-Maximal 80-100 letters in one line
+Maximal 80-100 letters in one line  
 We use the default build in Formatter from 'IntelliJ IDEA' (Ctr+Alt+L)
 
 ## 1.2 Brackets