diff --git a/DBEngine.cpp b/DBEngine.cpp
index 2c964ce..1eb0e4e 100755
--- a/DBEngine.cpp
+++ b/DBEngine.cpp
@@ -214,15 +214,15 @@ Relation DBEngine::setDiff(Relation r1, Relation r2){
 		//currently all returned relations are called TEMP
 		Relation new_r = r1;
 		new_r.setTableName("TEMP");
-		vector<string> temp;
-		//bool duplicate = false;
+		vector<string> temp;
+		//bool duplicate = false;
 		
 		int size = 0;
-		
+		
 		for(int x = 0; x < r2.getAttributes().size(); ++x)
 		{
 			for (int i = 0; i < r2.getAttributes()[x].getSize(); ++i)
-			{
+			{
 				temp = r2.getTuple(i);
 
 				for(int y = 0; y < new_r.getAttributes().size(); ++y)
@@ -244,8 +244,8 @@ Relation DBEngine::setDiff(Relation r1, Relation r2){
 						size = new_r.getAttributes()[y].getSize();
 					}
 				}
-			}
-		}
+			}
+		}
 		return new_r;
 	}
 }
@@ -283,17 +283,28 @@ Relation DBEngine::crossProduct(Relation r1, Relation r2){
 	}
 	
 
-	return new_r;
+	return new_r;
 }
 	
 //UPDATE Senator
 //SET Party = ‘Independent’
 //WHERE Name = ‘Joseph Lieberman’
 
-Relation DBEngine::update(Relation r, string attNameSet, string attSet, string attNameWhere, string attWhere){
-	Relation temp = equality(attNameWhere, attWhere, r);
+Relation DBEngine::updateCmd(Relation r, string attNameSet, string attSet, string attNameWhere, string attWhere){
+	Relation temp = selection(attNameWhere, attWhere, r);
+	vector<Attribute> atts = temp.getAttributes();
+
+	for (int i = 0; i < atts.size(); ++i){
+		if (atts[i].getName() == attNameSet) {
+			for (int j = 0; j < atts[i].getSize(); ++j){
+				atts[i]setValue(attSet, j);
+			}
+
+			break;
+		}
+	}
 	
-	
-	
-	return r;
-}
+	//currently returns a relation with just the changed values, need to look at proper join
+	//if proper join does not work, plan B is brute force
+	return temp;
+}
diff --git a/DBEngine.h b/DBEngine.h
index 922336b..2c857c3 100755
--- a/DBEngine.h
+++ b/DBEngine.h
@@ -21,16 +21,16 @@ public:
 	Relation& getTableFromName(string n);
 	void saveToFile(vector<string> cmds);
 	Relation selection(string attName, string s, Relation r);
-	Relation projection(vector<string> input, Relation r);
+	Relation projection(vector<string> input, Relation r);
 	Relation product(string s1, Relation r1, Relation r2);
-	void deleteRelation(string n);
+	void deleteRelation(string n);
 	void save();
 	void save(string n);
 	void storeCommands(string s);
 	Relation rename(vector<string> newnames, Relation &r);
 	Relation setUnion(Relation r1, Relation r2);
-	Relation setDiff(Relation r1, Relation r2);
+	Relation setDiff(Relation r1, Relation r2);
 	Relation crossProduct(Relation r1, Relation r2);
-	Relation update(Relation r, string attNameSet, string attSet, string attNameWhere, string attWhere);
-	//Relation deleteCmd();
+	Relation updateCmd(Relation r, string attNameSet, string attSet, string attNameWhere, string attWhere);
+	//Relation deleteCmd();
 };