diff --git a/DBEngine.h b/DBEngine.h
index 64fcef2..ecb9590 100755
--- a/DBEngine.h
+++ b/DBEngine.h
@@ -43,9 +43,7 @@ public:
 	void product() { /*Brandon*/ }
 	
 	bool unionComp(Relation r1, Relation r2) { 
-		//Two relations are union-compatible if they have the same # of attributes and each attribute must be
-		//from the same domain
-		//return (() && ());
+		return ((r1.getSize() == r2.getSize()) && (r1.getDomains() == r2.getDomains()));
 	}
 	
 	
diff --git a/Relation.h b/Relation.h
index 5edec44..525a0d9 100755
--- a/Relation.h
+++ b/Relation.h
@@ -88,4 +88,16 @@ public:
 	
 		}
 	}
+	
+	//make this better
+	vector<string> getDomains() {
+		vector<string> ds;
+		
+		for (int i = 0; i < size; ++i)
+		{
+			ds.push_back(att[i].getType());
+		}
+		
+		return ds;
+	}
 };
diff --git a/a.out b/a.out
index 1483993..428fec6 100755
Binary files a/a.out and b/a.out differ
diff --git a/test.cpp b/test.cpp
index 884021d..93f1781 100755
--- a/test.cpp
+++ b/test.cpp
@@ -25,16 +25,16 @@ int main() {
 	vec.push_back(att2);
 
 	Attribute att3("name", "VARCHAR(20)", true);
-	att1.addRow("Fry");
-	att1.addRow("Bender");
-	att1.addRow("Leela");
-	att1.addRow("Zoidberg");
+	att3.addRow("Fry");
+	att3.addRow("Bender");
+	att3.addRow("Leela");
+	att3.addRow("Zoidberg");
 	
 	Attribute att4("age", "INTEGER", false);
-	att2.addRow("22");
-	att2.addRow("5");
-	att2.addRow("22");
-	att2.addRow("50");
+	att4.addRow("22");
+	att4.addRow("5");
+	att4.addRow("22");
+	att4.addRow("50");
 	
 	vector<Attribute> vec2;
 	vec2.push_back(att3);
@@ -45,4 +45,26 @@ int main() {
 	engine.createTable("table2", vec2);
 	engine.showTables(engine.getTableFromName("table1"));
 	
+	Attribute att5("name", "VARCHAR(20)", true);
+	att5.addRow("Yrf");
+	att5.addRow("Redneb");
+	att5.addRow("Aleel");
+	att5.addRow("Grebdoiz");
+	
+	Attribute att6("age", "INTEGER", false);
+	att6.addRow("44");
+	att6.addRow("10");
+	att6.addRow("44");
+	att6.addRow("100");
+	
+	vector<Attribute> vec3;
+	vec3.push_back(att5);
+	vec3.push_back(att6);
+
+	engine.createTable("table3", vec3);
+	
+	cout << "a";
+	cout << engine.unionComp(engine.getTableFromName("table1"), engine.getTableFromName("table2"));
+	cout << engine.unionComp(engine.getTableFromName("table2"), engine.getTableFromName("table3"));
+	
 }