diff --git a/integration-tests/tools.js b/integration-tests/tools.js
index 7b13a2657..0a8b3e2b2 100644
--- a/integration-tests/tools.js
+++ b/integration-tests/tools.js
@@ -5,7 +5,12 @@ const crypto = require('crypto');
 function randomDbName(dialect) {
   const generatedKey = crypto.randomBytes(6);
   const newKey = generatedKey.toString('hex');
-  const res = `db${newKey}`;
+  let res = `db${newKey}`;
+
+  if (dialect.dbFileExtension) {
+    res += dialect.dbFileExtension;
+  }
+
   if (dialect.upperCaseAllDbObjectNames) return res.toUpperCase();
   return res;
 }
@@ -17,7 +22,7 @@ async function connect(engine, database) {
   if (engine.generateDbFile) {
     const conn = await driver.connect({
       ...connection,
-      databaseFile: `dbtemp/${database}`,
+      databaseFile: (engine.databaseFileLocationOnServer ?? 'dbtemp/') + database,
     });
     return conn;
   } else {
diff --git a/packages/tools/src/SqlDumper.ts b/packages/tools/src/SqlDumper.ts
index 371fb75fe..ce8c36a9f 100644
--- a/packages/tools/src/SqlDumper.ts
+++ b/packages/tools/src/SqlDumper.ts
@@ -265,11 +265,11 @@ export class SqlDumper implements AlterProcessor {
         this.columnDefault(column);
       }
       if (includeNullable && !this.dialect?.specificNullabilityImplementation) {
-        this.put(column.notNull ? '^not ^null' : '^null');
+        this.put(column.notNull ? '^not ^null' : this.dialect.implicitNullDeclaration ? '^null' : '');
       }
     } else {
       if (includeNullable && !this.dialect?.specificNullabilityImplementation) {
-        this.put(column.notNull ? '^not ^null' : '^null');
+        this.put(column.notNull ? '^not ^null' : this.dialect.implicitNullDeclaration ? '^null' : '');
       }
       if (includeDefault && column.defaultValue?.toString()?.trim()) {
         this.columnDefault(column);
diff --git a/packages/types/dialect.d.ts b/packages/types/dialect.d.ts
index 53baf4a0b..19a25a02f 100644
--- a/packages/types/dialect.d.ts
+++ b/packages/types/dialect.d.ts
@@ -48,6 +48,7 @@ export interface SqlDialect {
   namedDefaultConstraint?: boolean;
 
   specificNullabilityImplementation?: boolean;
+  implicitNullDeclaration?: boolean;
   omitForeignKeys?: boolean;
   omitUniqueConstraints?: boolean;
   omitIndexes?: boolean;
@@ -67,6 +68,7 @@ export interface SqlDialect {
   requireFromDual?: boolean;
   userDatabaseNamePrefix?: string; // c## in Oracle
   upperCaseAllDbObjectNames?: boolean;
+  dbFileExtension?: string;
   defaultValueBeforeNullability?: boolean;
 
   predefinedDataTypes: string[];
diff --git a/packages/types/test-engines.d.ts b/packages/types/test-engines.d.ts
index 9cea205c4..271c38bb6 100644
--- a/packages/types/test-engines.d.ts
+++ b/packages/types/test-engines.d.ts
@@ -60,6 +60,8 @@ export type TestEngineInfo = {
   defaultSchemaName?: string;
 
   generateDbFile?: boolean;
+  generateDbFileOnServer?: boolean;
+  databaseFileLocationOnServer?: string;
   dbSnapshotBySeconds?: boolean;
   dumpFile?: string;
   dumpChecks?: Array<{ sql: string; res: string }>;
diff --git a/plugins/dbgate-plugin-firebird/src/backend/driver.js b/plugins/dbgate-plugin-firebird/src/backend/driver.js
index 5c04830b0..be411482c 100644
--- a/plugins/dbgate-plugin-firebird/src/backend/driver.js
+++ b/plugins/dbgate-plugin-firebird/src/backend/driver.js
@@ -1,4 +1,5 @@
 const _ = require('lodash');
+const stream = require('stream');
 const driverBase = require('../frontend/driver');
 const Analyser = require('./Analyser');
 const Firebird = require('node-firebird');
@@ -22,7 +23,7 @@ const driver = {
 
     /**@type {Firebird.Database} */
     const db = await new Promise((resolve, reject) => {
-      Firebird.attach(options, (err, db) => {
+      Firebird.attachOrCreate(options, (err, db) => {
         if (err) {
           reject(err);
           return;
@@ -47,18 +48,14 @@ const driver = {
         resolve(result);
       });
     });
-    const columns = res[0] ? Object.keys(res[0]).map(i => ({ columnName: i })) : [];
+    const columns = res?.[0] ? Object.keys(res[0]).map(i => ({ columnName: i })) : [];
 
     return {
-      rows: res,
+      rows: res ?? [],
       columns,
     };
   },
 
-  async script(dbhan, sql) {
-    throw new Error('Not implemented');
-  },
-
   async stream(dbhan, sql, options) {
     try {
       await new Promise((resolve, reject) => {
@@ -101,7 +98,36 @@ const driver = {
   },
 
   async readQuery(dbhan, sql, structure) {
-    throw new Error('Not implemented');
+    console.log('readQuery from SQL:', sql);
+    const pass = new stream.PassThrough({
+      objectMode: true,
+      highWaterMark: 100,
+    });
+    let hasSentColumns = false;
+
+    dbhan.client.sequentially(
+      sql,
+      [],
+      (row, index) => {
+        if (!hasSentColumns) {
+          hasSentColumns = true;
+
+          const columns = Object.keys(row).map(i => ({ columnName: i }));
+
+          pass.write({
+            __isStreamHeader: true,
+            ...(structure || { columns }),
+          });
+        }
+
+        pass.write(row);
+      },
+      err => {
+        pass.end();
+      }
+    );
+
+    return pass;
   },
 
   async writeTable(dbhan, name, options) {
@@ -126,10 +152,6 @@ const driver = {
     ];
   },
 
-  async createDatabase(dbhan, name) {},
-
-  async dropDatabase(dbhan, name) {},
-
   async close(dbhan) {
     return new Promise((resolve, reject) => {
       dbhan.client.detach(err => {
diff --git a/plugins/dbgate-plugin-firebird/src/frontend/Dumper.js b/plugins/dbgate-plugin-firebird/src/frontend/Dumper.js
index f0df62e8f..154361d0a 100644
--- a/plugins/dbgate-plugin-firebird/src/frontend/Dumper.js
+++ b/plugins/dbgate-plugin-firebird/src/frontend/Dumper.js
@@ -1,5 +1,9 @@
 const { SqlDumper } = global.DBGATE_PACKAGES['dbgate-tools'];
 
-class Dumper extends SqlDumper {}
+class Dumper extends SqlDumper {
+  autoIncrement() {
+    this.put(' ^generated ^by ^default ^as ^identity');
+  }
+}
 
 module.exports = Dumper;
diff --git a/plugins/dbgate-plugin-firebird/src/frontend/driver.js b/plugins/dbgate-plugin-firebird/src/frontend/driver.js
index 69d729dae..0212e4f04 100644
--- a/plugins/dbgate-plugin-firebird/src/frontend/driver.js
+++ b/plugins/dbgate-plugin-firebird/src/frontend/driver.js
@@ -17,6 +17,8 @@ const dialect = {
     return `"${s}"`;
   },
 
+  dbFileExtension: '.fdb',
+
   createColumn: true,
   dropColumn: true,
   changeColumn: true,