#include "db_engine.h"
db_engine::db_engine(){
//
}
//create a new table in memory
//creates a vector
void 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;