#include <fstream>
#include <iostream>
#include <vector>
#include "Relation.h"

using namespace std;

class DBEngine {
	//member variables
	//NOT DONE
	//vector<Relation> tables;

public:
	DBEngine();
	void createCmd();
	//void openCmd();
	void saveCmd();
	void showCmd();
	void insertQuery();
	void deleteQuery();
	void selectQuery();
	void projectQuery();
	void productQuery();
	bool unionComp();
};