diff --git a/android/database/TableHelper.java b/android/database/TableHelper.java
new file mode 100644
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+++ b/android/database/TableHelper.java
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+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.database;
+
+import java.util.Date;
+import java.util.UUID;
+
+/**
+ * Helper class for creating and querying data from a database in performance tests.
+ *
+ * Subclasses can define different table/query formats.
+ */
+public abstract class TableHelper {
+
+    public interface CursorReader {
+        void read();
+    }
+
+    public abstract String createSql();
+    public abstract String insertSql();
+    public abstract Object[] createItem(int id);
+    public abstract String readSql();
+    public abstract CursorReader createReader(Cursor cursor);
+
+    /**
+     * 1 column, single integer
+     */
+    public static TableHelper INT_1 = new TableHelper() {
+        @Override
+        public String createSql() {
+            return "CREATE TABLE `Int1` ("
+                    + "`a` INTEGER,"
+                    + " PRIMARY KEY(`a`))";
+        }
+
+        @Override
+        public String insertSql() {
+            return "INSERT INTO `Int1`(`a`)"
+                    + " VALUES (?)";
+        }
+
+        @Override
+        public Object[] createItem(int id) {
+            return new Object[] {
+                    id,
+            };
+        }
+
+        @Override
+        public String readSql() {
+            return "SELECT * from Int1";
+        }
+
+        @Override
+        public CursorReader createReader(final Cursor cursor) {
+            final int cursorIndexOfA = cursor.getColumnIndexOrThrow("a");
+            return () -> {
+                cursor.getInt(cursorIndexOfA);
+            };
+        }
+    };
+    /**
+     * 10 columns of integers
+     */
+    public static TableHelper INT_10 = new TableHelper() {
+        @Override
+        public String createSql() {
+            return "CREATE TABLE `Int10` ("
+                    + "`a` INTEGER,"
+                    + " `b` INTEGER,"
+                    + " `c` INTEGER,"
+                    + " `d` INTEGER,"
+                    + " `e` INTEGER,"
+                    + " `f` INTEGER,"
+                    + " `g` INTEGER,"
+                    + " `h` INTEGER,"
+                    + " `i` INTEGER,"
+                    + " `j` INTEGER,"
+                    + " PRIMARY KEY(`a`))";
+        }
+
+        @Override
+        public String insertSql() {
+            return "INSERT INTO `Int10`(`a`,`b`,`c`,`d`,`e`,`f`,`g`,`h`,`i`,`j`)"
+                    + " VALUES (?,?,?,?,?,?,?,?,?,?)";
+        }
+
+        @Override
+        public Object[] createItem(int id) {
+            return new Object[] {
+                    id,
+                    id + 1,
+                    id + 2,
+                    id + 3,
+                    id + 4,
+                    id + 5,
+                    id + 6,
+                    id + 7,
+                    id + 8,
+                    id + 9,
+            };
+        }
+
+        @Override
+        public String readSql() {
+            return "SELECT * from Int10";
+        }
+
+        @Override
+        public CursorReader createReader(final Cursor cursor) {
+            final int cursorIndexOfA = cursor.getColumnIndexOrThrow("a");
+            final int cursorIndexOfB = cursor.getColumnIndexOrThrow("b");
+            final int cursorIndexOfC = cursor.getColumnIndexOrThrow("c");
+            final int cursorIndexOfD = cursor.getColumnIndexOrThrow("d");
+            final int cursorIndexOfE = cursor.getColumnIndexOrThrow("e");
+            final int cursorIndexOfF = cursor.getColumnIndexOrThrow("f");
+            final int cursorIndexOfG = cursor.getColumnIndexOrThrow("g");
+            final int cursorIndexOfH = cursor.getColumnIndexOrThrow("h");
+            final int cursorIndexOfI = cursor.getColumnIndexOrThrow("i");
+            final int cursorIndexOfJ = cursor.getColumnIndexOrThrow("j");
+            return () -> {
+                cursor.getInt(cursorIndexOfA);
+                cursor.getInt(cursorIndexOfB);
+                cursor.getInt(cursorIndexOfC);
+                cursor.getInt(cursorIndexOfD);
+                cursor.getInt(cursorIndexOfE);
+                cursor.getInt(cursorIndexOfF);
+                cursor.getInt(cursorIndexOfG);
+                cursor.getInt(cursorIndexOfH);
+                cursor.getInt(cursorIndexOfI);
+                cursor.getInt(cursorIndexOfJ);
+            };
+        }
+    };
+
+    /**
+     * Mock up of 'user' table with various ints/strings
+     */
+    public static TableHelper USER = new TableHelper() {
+        @Override
+        public String createSql() {
+            return "CREATE TABLE `User` ("
+                    + "`mId` INTEGER,"
+                    + " `mName` TEXT,"
+                    + " `mLastName` TEXT,"
+                    + " `mAge` INTEGER,"
+                    + " `mAdmin` INTEGER,"
+                    + " `mWeight` DOUBLE,"
+                    + " `mBirthday` INTEGER,"
+                    + " `mMoreText` TEXT,"
+                    + " PRIMARY KEY(`mId`))";
+        }
+
+        @Override
+        public String insertSql() {
+            return "INSERT INTO `User`(`mId`,`mName`,`mLastName`,`mAge`,"
+                    + "`mAdmin`,`mWeight`,`mBirthday`,`mMoreText`) VALUES (?,?,?,?,?,?,?,?)";
+        }
+
+        @Override
+        public Object[] createItem(int id) {
+            return new Object[] {
+                    id,
+                    UUID.randomUUID().toString(),
+                    UUID.randomUUID().toString(),
+                    (int) (10 + Math.random() * 50),
+                    0,
+                    (float)0,
+                    new Date().getTime(),
+                    UUID.randomUUID().toString(),
+            };
+        }
+
+        @Override
+        public String readSql() {
+            return "SELECT * from User";
+        }
+
+        @Override
+        public CursorReader createReader(final Cursor cursor) {
+            final int cursorIndexOfMId = cursor.getColumnIndexOrThrow("mId");
+            final int cursorIndexOfMName = cursor.getColumnIndexOrThrow("mName");
+            final int cursorIndexOfMLastName = cursor.getColumnIndexOrThrow("mLastName");
+            final int cursorIndexOfMAge = cursor.getColumnIndexOrThrow("mAge");
+            final int cursorIndexOfMAdmin = cursor.getColumnIndexOrThrow("mAdmin");
+            final int cursorIndexOfMWeight = cursor.getColumnIndexOrThrow("mWeight");
+            final int cursorIndexOfMBirthday = cursor.getColumnIndexOrThrow("mBirthday");
+            final int cursorIndexOfMMoreTextField = cursor.getColumnIndexOrThrow("mMoreText");
+            return () -> {
+                cursor.getInt(cursorIndexOfMId);
+                cursor.getString(cursorIndexOfMName);
+                cursor.getString(cursorIndexOfMLastName);
+                cursor.getInt(cursorIndexOfMAge);
+                cursor.getInt(cursorIndexOfMAdmin);
+                cursor.getFloat(cursorIndexOfMWeight);
+                if (!cursor.isNull(cursorIndexOfMBirthday)) {
+                    cursor.getLong(cursorIndexOfMBirthday);
+                }
+                cursor.getString(cursorIndexOfMMoreTextField);
+            };
+        }
+    };
+
+    public static TableHelper[] TABLE_HELPERS = new TableHelper[] {
+            INT_1,
+            INT_10,
+            USER,
+    };
+}