#include "db_engine.h"

db_engine::db_engine(){
	//USELESS COMMENT
}

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

//save all the commands to the db text file
void db_engine::saveCmd(){
	//
}

//display the table currently stored in memory
void db_engine::showCmd(){
	//
}

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

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

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

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

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

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