N-Track : Work-Time tracking system

__gc class CUser : public MarshalByRefObject,  public IUser
{
public:
	CUser(String*,String*,String*);
	String* GetUsername();
	String* GetPassword();
	String* GetFullname();
	
	void SetPassword(String*);
	void SetFullname(String*);
	
	bool Delete();
protected:
	String* m_username;
	String* m_password;
	String* m_fullname;
public:
	void SetGeneric(String* sqlstr);
};

__gc class CProject : public MarshalByRefObject, public IProject
{
public:
	CProject(String*, String*);

	String* GetProjectcode();

	String* GetProjectname();
	void SetProjectname(String*);

	bool Delete();

protected:
	String* m_projectcode;
	String* m_projectname;
public:
	void SetGeneric(String* sqlstr);
};

__gc class CActivity : public MarshalByRefObject, public IActivity
{
public:
	CActivity(String*, String*);

	String* GetActivitycode();

	String* GetActivitydescription();
	void SetActivitydescription(String*);

	bool Delete();

protected:
	String* m_activitycode;
	String* m_activitydescription;
public:
	void SetGeneric(String* sqlstr);
};

__gc class CTrack : public MarshalByRefObject, public ITrack
{
public:
	CTrack(String*,String* ,String* ,String* ,int);

	String* GetProjectcode();
	String* GetActivitycode();
	String* GetUsername();
	String* GetDate();

	int GetHours();
	void SetHours(int);

	void Delete();
protected:
	String* m_username;
	String* m_activitycode;
	String* m_projectcode;
	String* m_date;
	int m_hours;
public:
	void GenericSql(String* sqlstr);
	String* GenerateWhereSql(void);
};

__gc class CBasic : public MarshalByRefObject,public IBasic
{
public:
	IProject* GetProjects()[];
	IActivity* GetActivities()[];
	IUser* GetUsers()[];

	IUser* GetUser(String* username);
	IActivity* GetActivity(String* activitycode);
	IProject* GetProject(String* projectcode);

	ITrack* GetTracks(String*,String*,String*,TrackFilter)[];//user, project, activity
	
	/*user-activity, project-activity, user-project*/
	ITrack* GetTracks(String*,String*,String*,String*,TrackFilter)[];
	
	ITrack* GetTracks(String*,String*)[];//all

	ITrack* GetTracks(String*,String*,String*,String*,String*)[];

	void DeleteTracks(String*,String*);

	bool AddTrack(String*,String*,String*,String*,int);
	bool AddProject(String*,String*);
	bool AddActivity(String*, String*);
	bool AddUser(String*,String*,String*);

	bool AddGeneric(String* sqlstr);
	ITrack* GenericGetTracks(String* sqlstr)[];
};