 );
 CREATE TABLE NodesLog
 (
-	NodesLogID		INT PRIMARY KEY,
+	NodesLogID		UNSIGNED INT PRIMARY KEY AUTO_INCREMENT,
 	NodeActionID	INT NOT NULL,
 	NodeID			INT NOT NULL,
 	UserID			INT NOT NULL,

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

);
CREATE TABLE Files
(
	FileID		UNSIGNED INT PRIMARY KEY AUTO_INCREMENT,
	Name		VARCHAR(20) NOT NULL,
	ExtensionID INT NOT NULL,
	FileData	BLOB,
