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

//still in progress
class DBEngine {
	vector<Relation> tables;
	int size;

public:
	DBEngine(){
		size = 0;
	}

	void createTable(string n, vector<Attribute> a) {
		Relation r(n, a);
		tables.push_back(r);
	}
	
	void createTable(Relation r) {
		tables.push_back(r);
	}
	
	void showTable() {}
	void saveToFile() { /*???*/ }
	void insertTuple() {}
	void deleteTuple() {}
	void selectTuples() {}
	void project() {}
	void product() {}
	void unionComp() {}
	
	
	vector<Relation> getRelations() {
		return tables;
	}
};