Database description skeleton

Database.md

@@ -1,3 +1,68 @@
 # Database
 
+## Assignment
+
+## Comment
+
+## CommentThread
+
+## Exercise
+
+## ExerciseFile
+
+## ExternalLogin
+
+## ForgottenPassword
+
+## Group
+
+## GroupMembership
+
+## HardwareGroup
+
+## HardwareGroupAvailabilityLog
+
+## Instance
+
+## Licence
+
+## LocalizedAssignment
+
+## Login
+
+## Permission
+
+## ReferenceExerciseSolution
+
+## ReferenceSolutionEvaluation
+
+## ReportedErrors
+
+## Resource
+
+## Role
+
+## RuntimeEnvironment
+
+## Solution
+
+## SolutionEvaluation
+
+## SolutionFile
+
+## SolutionRuntimeConfig
+
+## Submission
+
+## SubmissionFailure
+
+## TestResult
+
+## UploadedFile
+
+## User
+
+## UserAction
+
+## UserSettings