 ALTER TABLE Nodes ADD CONSTRAINT FOREIGN KEY (UserID) REFERENCES Users(UserID);
 CREATE TABLE Edges
 (
-	EdgeID		INT PRIMARY KEY,
+	EdgeID		UNSIGNED INT PRIMARY KEY AUTO_INCREMENT,
 	ChildID		INT NOT NULL,
 	ParentID	INT NOT NULL,
 	UserID		INT NOT NULL,

);
CREATE TABLE Comments
(
	CommentID	INT PRIMARY KEY,
	UserID		INT NOT NULL,
	FileID		INT NOT NULL,
	CommentText	INT NOT NULL,

﻿CREATE TABLE NodeActions
(
	NodeActionID	UNSIGNED INT PRIMARY KEY AUTO_INCREMENT,
	NodeActionName	VARCHAR(20) NOT NULL
);
CREATE TABLE FileActions
(
	FileActionID	UNSIGNED INT PRIMARY KEY AUTO_INCREMENT,
	FileActionName	VARCHAR(20) NOT NULL
);
CREATE TABLE FileExtensions
(
	ExtensionID	UNSIGNED INT PRIMARY KEY AUTO_INCREMENT,
	Extension	VARCHAR(80) NOT NULL
);
CREATE TABLE Nodes
(
	NodeID		UNSIGNED INT PRIMARY KEY AUTO_INCREMENT,
	NodeName	VARCHAR(20) NOT NULL,
	UserID		INT NOT NULL,
	IsShared	BIT NOT NULL
);
CREATE TABLE Users
(
	UserID		UNSIGNED INT PRIMARY KEY AUTO_INCREMENT,
	LoginWord	VARCHAR(20) NOT NULL,
	PassPhrase	VARCHAR(20) NOT NULL,
	FirstName	VARCHAR(20),
