diff --git a/Attribute.h b/Attribute.h
index 9d8587b..6621b08 100755
--- a/Attribute.h
+++ b/Attribute.h
@@ -9,41 +9,29 @@ using namespace std;
 class Attribute {
 	//a named column of a relation
 	string name;
-	string type;
-	bool key;
+	bool isKey;
 	int size;
 	
 public:
+	
 	vector<string> values;
-	
-	Attribute(string n, string t, bool k){ 
+
+	void initializeAttribute(string n, vector<string> a){ 
+	 
 		name = n;
-		type = t;
-		key = k;
-		size = 0;
-	}
-	
-	void addRow(string v) {
-		values.push_back(v);
+		values = a;
 	}
 	
 	string getName(){ 
 		return name; 
 	}
 	
-	string getType(){ 
-		return type; 
-	}
-	
-	bool isKey(){ 
-		return key; 
-	}
+	Attribute(){  }
 	
 	void display()
 	{
-		cout<<"Atribute name:\t"<<name<<"\n";
-		cout<<"Elements: ";
-		
+		//cout<<"\nAtribute name:\t"<<name<<"\n";
+		//cout<<"Elements: ";
 		for (int i = 0; i < values.size(); ++i)
 		{
 			cout<<values[i]<<"      ";
@@ -54,4 +42,33 @@ public:
 	{
 		return values.size();
 	}
+	
+	void pushBack(string s)
+	{
+		values.push_back(s);
+	}
+	
+	void erase(int position)
+	{
+		values.erase(values.begin()+ position);
+	}
+/*	
+	Attribute(vector<string> v){ 
+		this.values = v; 
+	}
+	
+	Attribute(const Attribute<string>& a){ 
+		this.values = a.getAll(); 
+	}
+	
+	Attribute& operator=(const Attribute<string>& a){ 
+		this.values = a.getAll(); 
+	}
+	
+	
+	
+	vector<string> getAll(){
+		return this.values;
+	}
+*/	
 };