diff --git a/db/migrations/0001_add_initial_tables.rb b/db/migrations/0001_add_initial_tables.rb
index dc267f6..27ccc18 100644
--- a/db/migrations/0001_add_initial_tables.rb
+++ b/db/migrations/0001_add_initial_tables.rb
@@ -5,6 +5,7 @@ Sequel.migration do
       primary_key :id
       String :name, null: false
       String :type, null: false
+      String :description, text: true
       DateTime :created_at, default: Sequel::CURRENT_TIMESTAMP
       DateTime :updated_at, default: Sequel::CURRENT_TIMESTAMP
     end
@@ -12,28 +13,16 @@ Sequel.migration do
     create_table(:benchmarks) do
       primary_key :id
       String :name, null: false
-      String :description
+      String :description, text: true
       String :scoring, null: false
       DateTime :created_at, default: Sequel::CURRENT_TIMESTAMP
       DateTime :updated_at, default: Sequel::CURRENT_TIMESTAMP
     end
-
-    create_table(:results) do
-      primary_key :id
-      String :score, null: false
-      DateTime :created_at, default: Sequel::CURRENT_TIMESTAMP
-      DateTime :updated_at, default: Sequel::CURRENT_TIMESTAMP
-    end
-    alter_table(:results) do
-      add_foreign_key :hardware_id, :hardware
-      add_foreign_key :benchmark_id, :benchmarks
-    end
   end
 
   down do
     drop_table(:hardware)
     drop_table(:benchmarks)
-    drop_table(:results)
   end
 
 end
diff --git a/db/migrations/0002_add_result_type.rb b/db/migrations/0002_add_result_type.rb
deleted file mode 100644
index 60665ab..0000000
--- a/db/migrations/0002_add_result_type.rb
+++ /dev/null
@@ -1,17 +0,0 @@
-Sequel.migration do
-
-  up do
-    alter_table(:results) do
-      add_column :type, String, null: false, default: 'fps'
-      add_column :minimum_score, String
-      add_column :maximum_score, String
-    end
-  end
-
-  down do
-    drop_column :results, :type
-    drop_column :results, :minimum_score
-    drop_column :results, :maximum_score
-  end
-
-end
diff --git a/db/migrations/0002_add_tests_table.rb b/db/migrations/0002_add_tests_table.rb
new file mode 100644
index 0000000..91f56b7
--- /dev/null
+++ b/db/migrations/0002_add_tests_table.rb
@@ -0,0 +1,28 @@
+Sequel.migration do
+
+  up do
+    # create tests table
+    create_table(:tests) do
+      primary_key :id
+      foreign_key :hardware_id, :hardware
+      String :date_tag, null: false
+      String :description, text: true
+      DateTime :created_at, default: Sequel::CURRENT_TIMESTAMP
+      DateTime :updated_at, default: Sequel::CURRENT_TIMESTAMP
+    end
+
+    # create many-to-many table for benchmarks and tests
+    create_table(:tests_benchmarks) do
+      foreign_key :test_id, :tests
+      foreign_key :benchmark_id, :benchmarks
+      DateTime :created_at, default: Sequel::CURRENT_TIMESTAMP
+      DateTime :updated_at, default: Sequel::CURRENT_TIMESTAMP
+    end
+  end
+
+  down do
+    drop_table(:tests_benchmarks)
+    drop_table(:tests)
+  end
+
+end
diff --git a/db/migrations/0003_add_results_table.rb b/db/migrations/0003_add_results_table.rb
new file mode 100644
index 0000000..cdcbab0
--- /dev/null
+++ b/db/migrations/0003_add_results_table.rb
@@ -0,0 +1,29 @@
+Sequel.migration do
+
+  up do
+    # create tests table
+    create_table(:results) do
+      primary_key :id
+      foreign_key :benchmark_id, :benchmarks
+      Float :avg_score, null: false
+      Float :min_score
+      Float :max_score
+      DateTime :created_at, default: Sequel::CURRENT_TIMESTAMP
+      DateTime :updated_at, default: Sequel::CURRENT_TIMESTAMP
+    end
+
+    # create many-to-many table for results and tests
+    create_table(:tests_results) do
+      foreign_key :test_id, :tests
+      foreign_key :result_id, :results
+      DateTime :created_at, default: Sequel::CURRENT_TIMESTAMP
+      DateTime :updated_at, default: Sequel::CURRENT_TIMESTAMP
+    end
+  end
+
+  down do
+    drop_table(:tests_results)
+    drop_table(:results)
+  end
+
+end
diff --git a/db/migrations/0003_add_tests_table.rb b/db/migrations/0003_add_tests_table.rb
deleted file mode 100644
index 31fb3cc..0000000
--- a/db/migrations/0003_add_tests_table.rb
+++ /dev/null
@@ -1,31 +0,0 @@
-Sequel.migration do
-
-  up do
-    # create tests table
-    create_table(:tests) do
-      primary_key :id
-      String :date_tag, null: false
-      DateTime :created_at, default: Sequel::CURRENT_TIMESTAMP
-      DateTime :updated_at, default: Sequel::CURRENT_TIMESTAMP
-    end
-
-    # add foreign keys to tests table
-    alter_table(:tests) do
-      add_foreign_key(:benchmark_id, :benchmarks, null: false)
-      add_foreign_key(:hardware_id, :hardware, null: false)
-    end
-
-    # add the test ID link to results table; remove old links to hardware and benchmarks tables
-    alter_table(:results) do
-      add_foreign_key(:test_id, :tests, null: false)
-      drop_column(:benchmark_id)
-      drop_column(:hardware_id)
-    end
-  end
-
-  down do
-    drop_column(:results, :test_id)
-    drop_table(:tests)
-  end
-
-end