diff --git a/index.js b/index.js
index 1c85a07c..d5e38509 100644
--- a/index.js
+++ b/index.js
@@ -4,6 +4,7 @@ var path = require('path');
 exports.Schema = require('./lib/schema').Schema;
 exports.AbstractClass = require('./lib/abstract-class').AbstractClass;
 exports.Validatable = require('./lib/validatable').Validatable;
+exports.BaseSQL = require('./lib/sql');
 
 exports.init = function (rw) {
     if (typeof rw === 'string') {
diff --git a/lib/adapters/sqlite3.js b/lib/adapters/sqlite3.js
deleted file mode 100644
index 58d5a30b..00000000
--- a/lib/adapters/sqlite3.js
+++ /dev/null
@@ -1,409 +0,0 @@
-var safeRequire = require('../utils').safeRequire;
-
-/**
- * Module dependencies
- */
-var sqlite3 = safeRequire('sqlite3');
-var BaseSQL = require('../sql');
-
-exports.initialize = function initializeSchema(schema, callback) {
-    if (!sqlite3) return;
-    var s = schema.settings;
-    var Database = sqlite3.verbose().Database;
-    var db = new Database(s.database);
-
-    schema.client = db;
-
-    schema.adapter = new SQLite3(schema.client);
-    if (s.database === ':memory:') {
-        schema.adapter.automigrate(callback);
-    } else {
-        process.nextTick(callback);
-    }
-};
-
-function SQLite3(client) {
-    this._models = {};
-    this.client = client;
-}
-
-require('util').inherits(SQLite3, BaseSQL);
-
-SQLite3.prototype.command = function () {
-    this.query('run', [].slice.call(arguments));
-};
-
-SQLite3.prototype.queryAll = function () {
-    this.query('all', [].slice.call(arguments));
-};
-
-SQLite3.prototype.queryOne = function () {
-    this.query('get', [].slice.call(arguments));
-};
-
-SQLite3.prototype.query = function (method, args) {
-    var time = Date.now();
-    var log = this.log;
-    var cb = args.pop();
-    if (typeof cb === 'function') {
-        args.push(function (err, data) {
-            if (log) log(args[0], time);
-            cb.call(this, err, data);
-        });
-    } else {
-        args.push(cb);
-        args.push(function (err, data) {
-            log(args[0], time);
-        });
-    }
-    this.client[method].apply(this.client, args);
-};
-
-SQLite3.prototype.save = function (model, data, callback) {
-    var queryParams = [];
-    var sql = 'UPDATE ' + this.tableEscaped(model) + ' SET ' +
-    Object.keys(data).map(function (key) {
-        queryParams.push(data[key]);
-        return key + ' = ?';
-    }).join(', ') + ' WHERE id = ' + data.id;
-
-    this.command(sql, queryParams, function (err) {
-        callback(err);
-    });
-};
-
-/**
- * Must invoke callback(err, id)
- */
-SQLite3.prototype.create = function (model, data, callback) {
-    data = data || {};
-    var questions = [];
-    var values = Object.keys(data).map(function (key) {
-        questions.push('?');
-        return data[key];
-    });
-    var sql = 'INSERT INTO ' + this.tableEscaped(model) + ' (' + Object.keys(data).join(',') + ') VALUES ('
-    sql += questions.join(',');
-    sql += ')';
-    this.command(sql, values, function (err) {
-        callback(err, this && this.lastID);
-    });
-};
-
-SQLite3.prototype.updateOrCreate = function (model, data, callback) {
-    data = data || {};
-    var questions = [];
-    var values = Object.keys(data).map(function (key) {
-        questions.push('?');
-        return data[key];
-    });
-    var sql = 'INSERT OR REPLACE INTO ' + this.tableEscaped(model) + ' (' + Object.keys(data).join(',') + ') VALUES ('
-    sql += questions.join(',');
-    sql += ')';
-    this.command(sql, values, function (err) {
-        if (!err && this) {
-            data.id = this.lastID;
-        }
-        callback(err, data);
-    });
-};
-
-SQLite3.prototype.toFields = function (model, data) {
-    var fields = [];
-    var props = this._models[model].properties;
-    Object.keys(data).forEach(function (key) {
-        if (props[key]) {
-            fields.push('`' + key.replace(/\./g, '`.`') + '` = ' + this.toDatabase(props[key], data[key]));
-        }
-    }.bind(this));
-    return fields.join(',');
-};
-
-function dateToMysql(val) {
-    return val.getUTCFullYear() + '-' +
-        fillZeros(val.getUTCMonth() + 1) + '-' +
-        fillZeros(val.getUTCDate()) + ' ' +
-        fillZeros(val.getUTCHours()) + ':' +
-        fillZeros(val.getUTCMinutes()) + ':' +
-        fillZeros(val.getUTCSeconds());
-
-    function fillZeros(v) {
-        return v < 10 ? '0' + v : v;
-    }
-}
-
-SQLite3.prototype.toDatabase = function (prop, val) {
-    if (!prop) return val;
-    if (prop.type.name === 'Number') return val;
-    if (val === null) return 'NULL';
-    if (prop.type.name === 'Date') {
-        if (!val) return 'NULL';
-        if (!val.toUTCString) {
-            val = new Date(val);
-        }
-        return val;
-    }
-    if (prop.type.name == "Boolean") return val ? 1 : 0;
-    return val.toString();
-};
-
-SQLite3.prototype.fromDatabase = function (model, data) {
-    if (!data) return null;
-    var props = this._models[model].properties;
-    Object.keys(data).forEach(function (key) {
-        var val = data[key];
-        if (props[key]) {
-            if (props[key].type.name === 'Date') {
-                val = new Date(parseInt(val));
-            }
-        }
-        data[key] = val;
-    });
-    return data;
-};
-
-SQLite3.prototype.escapeName = function (name) {
-    return '`' + name + '`';
-};
-
-SQLite3.prototype.exists = function (model, id, callback) {
-    var sql = 'SELECT 1 FROM ' + this.tableEscaped(model) + ' WHERE id = ' + id + ' LIMIT 1';
-    this.queryOne(sql, function (err, data) {
-        if (err) return callback(err);
-        callback(null, data && data['1'] === 1);
-    });
-};
-
-SQLite3.prototype.find = function find(model, id, callback) {
-    var sql = 'SELECT * FROM ' + this.tableEscaped(model) + ' WHERE id = ' + id + ' LIMIT 1';
-    this.queryOne(sql, function (err, data) {
-        if (data) {
-            data.id = id;
-        } else {
-            data = null;
-        }
-        callback(err, this.fromDatabase(model, data));
-    }.bind(this));
-};
-
-SQLite3.prototype.all = function all(model, filter, callback) {
-
-    var sql = 'SELECT * FROM ' + this.tableEscaped(model);
-    var self = this;
-    var props = this._models[model].properties;
-    var queryParams = [];
-
-    if (filter) {
-
-        if (filter.where) {
-            sql += ' ' + buildWhere(filter.where);
-        }
-
-        if (filter.order) {
-            sql += ' ' + buildOrderBy(filter.order);
-        }
-
-        if (filter.limit) {
-            sql += ' ' + buildLimit(filter.limit, filter.offset || 0);
-        }
-
-    }
-
-    this.queryAll(sql, queryParams, function (err, data) {
-        if (err) {
-            return callback(err, []);
-        }
-        callback(null, data.map(function (obj) {
-            return self.fromDatabase(model, obj);
-        }));
-    }.bind(this));
-
-    return sql;
-
-    function buildWhere(conds) {
-        var cs = [];
-        Object.keys(conds).forEach(function (key) {
-            var keyEscaped = '`' + key.replace(/\./g, '`.`') + '`'
-            if (conds[key] === null) {
-                cs.push(keyEscaped + ' IS NULL');
-            } else if (conds[key].constructor.name === 'Object') {
-                var condType = Object.keys(conds[key])[0];
-                var sqlCond = keyEscaped;
-                switch (condType) {
-                    case 'gt':
-                    sqlCond += ' > ';
-                    break;
-                    case 'gte':
-                    sqlCond += ' >= ';
-                    break;
-                    case 'lt':
-                    sqlCond += ' < ';
-                    break;
-                    case 'lte':
-                    sqlCond += ' <= ';
-                    break;
-                    case 'between':
-                    sqlCond += ' BETWEEN ? AND ?';
-                    queryParams.push(conds[key][condType][0]);
-                    queryParams.push(conds[key][condType][1]);
-                    break;
-                }
-                if (condType !== 'between') {
-                    sqlCond += '?';
-                    queryParams.push(conds[key][condType]);
-                }
-                cs.push(sqlCond);
-            } else {
-                cs.push(keyEscaped + ' = ?');
-                queryParams.push(self.toDatabase(props[key], conds[key]));
-            }
-        });
-        return 'WHERE ' + cs.join(' AND ');
-    }
-
-    function buildOrderBy(order) {
-        if (typeof order === 'string') order = [order];
-        return 'ORDER BY ' + order.join(', ');
-    }
-
-    function buildLimit(limit, offset) {
-        return 'LIMIT ' + (offset ? (offset + ', ' + limit) : limit);
-    }
-
-};
-
-SQLite3.prototype.count = function count(model, callback, where) {
-    var self = this;
-    var props = this._models[model].properties;
-    var queryParams = [];
-
-    this.queryOne('SELECT count(*) as cnt FROM ' +
-        this.tableEscaped(model) + ' ' + buildWhere(where), queryParams, function (err, res) {
-        if (err) return callback(err);
-        callback(err, err ? null : res.cnt);
-    });
-
-    function buildWhere(conds) {
-        var cs = [];
-        Object.keys(conds || {}).forEach(function (key) {
-            var keyEscaped = '`' + key.replace(/\./g, '`.`') + '`'
-            if (conds[key] === null) {
-                cs.push(keyEscaped + ' IS NULL');
-            } else {
-                cs.push(keyEscaped + ' = ?');
-                queryParams.push(self.toDatabase(props[key], conds[key]));
-            }
-        });
-        return cs.length ? ' WHERE ' + cs.join(' AND ') : '';
-    }
-};
-
-SQLite3.prototype.disconnect = function disconnect() {
-    this.client.close();
-};
-
-SQLite3.prototype.autoupdate = function (cb) {
-    var self = this;
-    var wait = 0;
-    Object.keys(this._models).forEach(function (model) {
-        wait += 1;
-        self.queryAll('SHOW FIELDS FROM ' + this.tableEscaped(model), function (err, fields) {
-            self.alterTable(model, fields, done);
-        });
-    });
-
-    function done(err) {
-        if (err) {
-            console.log(err);
-        }
-        if (--wait === 0 && cb) {
-            cb();
-        }
-    }
-};
-
-SQLite3.prototype.alterTable = function (model, actualFields, done) {
-    var self = this;
-    var m = this._models[model];
-    var propNames = Object.keys(m.properties);
-    var sql = [];
-
-    // change/add new fields
-    propNames.forEach(function (propName) {
-        if (propName === 'id') return;
-        var found;
-        actualFields.forEach(function (f) {
-            if (f.Field === propName) {
-                found = f;
-            }
-        });
-
-        if (found) {
-            actualize(propName, found);
-        } else {
-            sql.push('ADD COLUMN `' + propName + '` ' + self.propertySettingsSQL(model, propName));
-        }
-    });
-
-    // drop columns
-    actualFields.forEach(function (f) {
-        var notFound = !~propNames.indexOf(f.Field);
-        if (f.Field === 'id') return;
-        if (notFound || !m.properties[f.Field]) {
-            sql.push('DROP COLUMN `' + f.Field + '`');
-        }
-    });
-
-    if (sql.length) {
-        this.command('ALTER TABLE ' + this.tableEscaped(model) + ' ' + sql.join(',\n'), done);
-    } else {
-        done();
-    }
-
-    function actualize(propName, oldSettings) {
-        var newSettings = m.properties[propName];
-        if (newSettings && changed(newSettings, oldSettings)) {
-            sql.push('CHANGE COLUMN `' + propName + '` `' + propName + '` ' + self.propertySettingsSQL(model, propName));
-        }
-    }
-
-    function changed(newSettings, oldSettings) {
-        if (oldSettings.Null === 'YES' && (newSettings.allowNull === false || newSettings.null === false)) return true;
-        if (oldSettings.Null === 'NO' && !(newSettings.allowNull === false || newSettings.null === false)) return true;
-        if (oldSettings.Type.toUpperCase() !== datatype(newSettings)) return true;
-        return false;
-    }
-};
-
-SQLite3.prototype.propertiesSQL = function (model) {
-    var self = this;
-    var sql = ['`id` INTEGER PRIMARY KEY'];
-    Object.keys(this._models[model].properties).forEach(function (prop) {
-        if (prop === 'id') return;
-        sql.push('`' + prop + '` ' + self.propertySettingsSQL(model, prop));
-    });
-    return sql.join(',\n  ');
-
-};
-
-SQLite3.prototype.propertySettingsSQL = function (model, prop) {
-    var p = this._models[model].properties[prop];
-    return datatype(p) + ' ' +
-    (p.allowNull === false || p['null'] === false ? 'NOT NULL' : 'NULL');
-};
-
-function datatype(p) {
-    switch (p.type.name) {
-        case 'String':
-        return 'VARCHAR(' + (p.limit || 255) + ')';
-        case 'Text':
-        return 'TEXT';
-        case 'Number':
-        return 'INT(11)';
-        case 'Date':
-        return 'DATETIME';
-        case 'Boolean':
-        return 'TINYINT(1)';
-    }
-}
-
diff --git a/package.json b/package.json
index ac0de152..8051de3d 100644
--- a/package.json
+++ b/package.json
@@ -57,8 +57,7 @@
     "node >= 0.4.12"
   ],
   "dependencies": {
-    "node-uuid": ">= 1.3.3",
-    "lodash": "1.x.x"
+    "node-uuid": ">= 1.3.3"
   },
   "devDependencies": {
     "semicov": "*",