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Update DBEngine.h

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This commit is contained in:
Brandon Jackson 2015-09-25 00:30:32 -05:00
parent ecc31ea072
commit 5cadbd35ae
1 changed files with 9 additions and 4 deletions
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13
DBEngine.h
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@ -1,3 +1,4 @@
#pragma once
#include <fstream>
#include <iostream>
#include <vector>
@ -6,8 +7,9 @@
//still in progress
class DBEngine{
vector<Relation> tables;
vector<string> commands;
int size;
public:
DBEngine();
void createTable(string n);
@ -17,10 +19,13 @@ public:
//void showTable(Relation r);
Relation& getTableFromName(string n);
void saveToFile(vector<string> cmds);
//Relation selection();
Relation selection(string attName, string s, Relation r);
Relation projection(vector<string> input, Relation r);
Relation product(string s1, Relation r1, Relation r2);
void rename(Relation& r, vector<string> oldnames, vector<string> newnames);
//void setUnion();
void save();
void storeCommands(string s);
//Relation setUnion(Relation r1, Relation r2);
//void setDiff();
//void crossProduct();
//void crossProduct();
};