diff --git a/DBEngine.h b/DBEngine.h
index 32e96c2..e889297 100755
--- a/DBEngine.h
+++ b/DBEngine.h
@@ -5,21 +5,17 @@
 
 using namespace std;
 
-class DBEngine {
-	//member variables
-	//NOT DONE
-	//vector<Relation> tables;
+class DBEngine {
+	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();
+	
+	void addRelation(Relation r) {
+		tables.push_back(r);
+	}
+	
+	vector<Relation> getRelations() {
+		return tables;
+	}
 };