diff --git a/RELEASE.md b/RELEASE.md
index 3cf9dfb..5114d9b 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -1,5 +1,9 @@
 # @teqfw/db: releases
 
+## 0.22.1
+
+* Detect `Client_BetterSQLite3` constructor.
+
 ## 0.22.0
 
 * Add the selection DTO for listing queries.
diff --git a/doc/selection.md b/doc/selection.md
deleted file mode 100644
index 2ebb518..0000000
--- a/doc/selection.md
+++ /dev/null
@@ -1,83 +0,0 @@
-# The structure of selection DTO
-
-See `TeqFw_Db_Shared_Dto_List_Selection` module.
-
-```js
-class Dto {
-    /** @type {Object} */
-    filter;
-    /** @type {TeqFw_Db_Shared_Dto_Order.Dto[]} */
-    orderBy;
-    /** @type {number} */
-    rowsLimit;
-    /** @type {number} */
-    rowsOffset;
-}
-```
-
-## filter
-
-The filter is a hierarchy of conditions and functions.
-
-```js
-const value = '[ string | number | bool ]'; // the value is a constant used in a function
-```
-
-```js
-const alias = 'string'; // the alias is a "column" in a list query and also used in a function
-```
-
-```js
-const func = {
-    name: 'EQ', // name of the function from the acceptable functions set [ EQ | GTE | GT | LTE | LT | NEQ | LIKE | NOT_LIKE | ILIKE | NOT_ILIKE | IN | NOT_IN | ... ] 
-    params: [{/*[alias|value|func]*/}, {/*[alias|value|func]*/}, /* ... */] // any number of arguments for the function
-};
-```
-
-```js
-const cond = {
-    with: '[ OR | AND | XOR | NOT ]', // for "NOT" only one entry is acceptable in entries array
-    items: [/* cond or func */],
-};
-```
-
-```js
-const filter = { /* "cond" or "func" */};
-```
-
-The sample:
-
-```json
-{
-  "filter": {
-    "with": "AND",
-    "entries": [
-      {
-        "name": "GTE",
-        "params": [{"alias": "user_id"}, {"value": 0}]
-      },
-      {
-        "name": "LTE",
-        "params": [{"alias": "user_id"}, {"value": 100}]
-      },
-      {
-        "with": "OR",
-        "entries": [
-          {
-            "name": "EQ",
-            "params": [{"alias": "name"}, {"value": "user1"}]
-          },
-          {
-            "name": "EQ",
-            "params": [{"alias": "name"}, {"value": "user2"}]
-          }
-        ]
-      }
-    ]
-  }
-}
-```
-
-```sql
-SELECT * FROM users WHERE (user_id >= 0) AND (user_id < 100) AND ((name = 'user1') OR (name = 'user2'));
-```
\ No newline at end of file
diff --git a/package.json b/package.json
index c43c40e..0e5bd73 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@teqfw/db",
-  "version": "0.22.0",
+  "version": "0.22.1",
   "description": "TeqFW: DB connectivity.",
   "scripts": {
     "test": "./node_modules/mocha/bin/_mocha --recursive './test/mod/**/*.test.mjs'"
diff --git a/src/Back/RDb/Trans.mjs b/src/Back/RDb/Trans.mjs
index 9f43246..6916a35 100644
--- a/src/Back/RDb/Trans.mjs
+++ b/src/Back/RDb/Trans.mjs
@@ -37,7 +37,8 @@ export default class TeqFw_Db_Back_RDb_Trans {
     }
 
     isSqlite() {
-        return this.#trx?.client?.constructor?.name === 'Client_SQLite3';
+        const name = this.#trx?.client?.constructor?.name;
+        return (name === 'Client_SQLite3') || (name === 'Client_BetterSQLite3');
     }
 
     async commit() {
diff --git a/test/man/Back/Mod/Selection.test.mjs b/test/man/Back/Mod/Selection.test.mjs
deleted file mode 100644
index ab17c17..0000000
--- a/test/man/Back/Mod/Selection.test.mjs
+++ /dev/null
@@ -1,66 +0,0 @@
-/**
- * The model to populate queries with clauses from selection object.
- * (@see TeqFw_Db_Shared_Dto_List_Selection)
- */
-import assert from 'assert';
-import {config as cfgTest, container} from '@teqfw/test';
-import {describe, it} from 'mocha';
-
-// SETUP ENV
-
-/** @type {TeqFw_Core_Back_Config} */
-const config = await container.get('TeqFw_Core_Back_Config$');
-config.init(cfgTest.pathToRoot, 'test');
-const cfgDb = config.getLocal('@teqfw/db');
-
-/**
- * Framework wide RDB connection from DI. This connection is used by event listeners.
- * @type {TeqFw_Db_Back_RDb_Connect}
- */
-const connFw = await container.get('TeqFw_Db_Back_RDb_IConnect$');
-/** @type {TeqFw_Core_Back_Mod_App_Uuid} */
-const modBackUuid = await container.get('TeqFw_Core_Back_Mod_App_Uuid$');
-await modBackUuid.init();
-
-
-// GET OBJECT FROM CONTAINER AND RUN TESTS
-/** @type {TeqFw_Db_Back_Mod_Selection} */
-const mod = await container.get('TeqFw_Db_Back_Mod_Selection$');
-/** @type {TeqFw_Db_Shared_Dto_List_Selection} */
-const selection = await container.get('TeqFw_Db_Shared_Dto_List_Selection$');
-/** @type {Lp_Cust_Back_Web_Api_Event_List_A_Query} */
-const meta = await container.get('Lp_Cust_Back_Web_Api_Event_List_A_Query$');
-
-
-describe('TeqFw_Db_Back_Mod_Selection', function () {
-
-    it('can be instantiated', async () => {
-        assert(typeof mod === 'object');
-    });
-
-    it('parses a filter', async () => {
-        await connFw.init(cfgDb);
-        const trx = await connFw.startTransaction();
-        try {
-            const query = meta.build(trx, {bid: 2, lang: 'es'});
-            const dto = selection.createDto({
-                'filter': {
-                    'items': [
-                        {'name': 'GTE', 'params': [{'alias': 'dateStart'}, {'value': '2024-05-09T08:32:02.462Z'}]},
-                        {'name': 'LTE', 'params': [{'alias': 'dateStart'}, {'value': '2024-05-09T08:32:02.462Z'}]}
-                    ], 'with': 'AND'
-                },
-                'orderBy': [{'alias': 'dateStart', 'dir': 'desc'}]
-            });
-            mod.populate(trx, meta, query, dto);
-            const sql = query.toString();
-            assert(sql);
-        } finally {
-            await trx.rollback();
-            await connFw.disconnect();
-        }
-
-    });
-
-});
-