#include "DBEngine.h"

using namespace std;

DBEngine::DBEngine(){
	//
}

//create a new table in memory
void DBEngine::createCmd(){
	//
}
	
//open a txt file, parse SQL script, load data in table
//void DBEngine::openCmd(){
	//
//}

//should write cmdList to a .txt file
void DBEngine::saveCmd(){
	//
}

//display the database
void DBEngine::showCmd(){
	//
}

//add a tuple to a table in the memory
void DBEngine::insertQuery(){
	//
}

//remove a tuple from a table in the memory
void DBEngine::deleteQuery(){
	//
}

//search and return one more tuples from a table in the memory
void DBEngine::selectQuery(){
	//
}

//return a subset of attributes (columns)
void DBEngine::projectQuery(){
	//
}

//each row in the first table is paired with all the rows in the second table
void DBEngine::productQuery(){
	//
}

//true if relations have the same # of attributes and each attribute must be from the same domain
bool DBEngine::unionComp(){
	return false;
}