diff --git a/adapters/mssql_adapter.go b/adapters/mssql_adapter.go
index f50c69b..8260b8a 100644
--- a/adapters/mssql_adapter.go
+++ b/adapters/mssql_adapter.go
@@ -65,7 +65,7 @@ func (adapter mssqlAdapter) CreateDatabaseUser(ctx context.Context, database str
 }
 
 func (adapter mssqlAdapter) DeleteDatabaseUser(ctx context.Context, database string, username string) error {
-	query := fmt.Sprintf("USE [%s]; DROP USER %s;", database, username)
+	query := fmt.Sprintf("USE [%s]; DROP USER [%s];", database, username)
 	_, err := adapter.db.ExecContext(ctx, query)
 	return err
 }
diff --git a/adapters/mysql_adapter.go b/adapters/mysql_adapter.go
index 09737ad..abe5be0 100644
--- a/adapters/mysql_adapter.go
+++ b/adapters/mysql_adapter.go
@@ -21,13 +21,13 @@ func (adapter mysqlAdapter) HasDatabase(ctx context.Context, database string) (b
 }
 
 func (adapter mysqlAdapter) CreateDatabase(ctx context.Context, database string) error {
-	query := fmt.Sprintf("CREATE DATABASE %s;", database)
+	query := fmt.Sprintf("CREATE DATABASE `%s`;", database)
 	_, err := adapter.db.ExecContext(ctx, query)
 	return err
 }
 
 func (adapter mysqlAdapter) DeleteDatabase(ctx context.Context, database string) error {
-	query := fmt.Sprintf("DROP DATABASE %s;", database)
+	query := fmt.Sprintf("DROP DATABASE `%s`;", database)
 	_, err := adapter.db.ExecContext(ctx, query)
 	return err
 }
@@ -42,13 +42,13 @@ func (adapter mysqlAdapter) HasDatabaseUserWithAccess(ctx context.Context, datab
 func (adapter mysqlAdapter) CreateDatabaseUser(ctx context.Context, database string, username string, password string) error {
 	// make password sql safe
 	quotedPassword := QuoteLiteral(password)
-	query := fmt.Sprintf("CREATE USER '%s'@'%%' IDENTIFIED BY %s;", username, quotedPassword)
+	query := fmt.Sprintf("CREATE USER `%s`@'%%' IDENTIFIED BY %s;", username, quotedPassword)
 	_, err := adapter.db.ExecContext(ctx, query)
 	if err != nil {
 		return err
 	}
 
-	query = fmt.Sprintf("GRANT ALL PRIVILEGES ON %s.* TO '%s'@'%%';", database, username)
+	query = fmt.Sprintf("GRANT ALL PRIVILEGES ON `%s`.* TO `%s`@'%%';", database, username)
 	_, err = adapter.db.ExecContext(ctx, query)
 	if err != nil {
 		return err
@@ -59,7 +59,7 @@ func (adapter mysqlAdapter) CreateDatabaseUser(ctx context.Context, database str
 }
 
 func (adapter mysqlAdapter) DeleteDatabaseUser(ctx context.Context, database string, username string) error {
-	query := fmt.Sprintf("DROP USER %s;", username)
+	query := fmt.Sprintf("DROP USER '%s';", username)
 	_, err := adapter.db.ExecContext(ctx, query)
 	return err
 }
diff --git a/adapters/postgres_adapter.go b/adapters/postgres_adapter.go
index a53ab3d..ed68889 100644
--- a/adapters/postgres_adapter.go
+++ b/adapters/postgres_adapter.go
@@ -22,13 +22,13 @@ func (adapter postgresAdapter) HasDatabase(ctx context.Context, database string)
 }
 
 func (adapter postgresAdapter) CreateDatabase(ctx context.Context, database string) error {
-	query := fmt.Sprintf("CREATE DATABASE %s", database)
+	query := fmt.Sprintf("CREATE DATABASE \"%s\";", database)
 	_, err := adapter.db.Exec(ctx, query)
 	return err
 }
 
 func (adapter postgresAdapter) DeleteDatabase(ctx context.Context, database string) error {
-	query := fmt.Sprintf("DROP DATABASE %s", database)
+	query := fmt.Sprintf("DROP DATABASE \"%s\";", database)
 	_, err := adapter.db.Exec(ctx, query)
 	return err
 }
@@ -46,13 +46,13 @@ func (adapter postgresAdapter) HasDatabaseUserWithAccess(ctx context.Context, da
 func (adapter postgresAdapter) CreateDatabaseUser(ctx context.Context, database string, username string, password string) error {
 	// make password sql safe
 	quotedPassword := QuoteLiteral(password)
-	query := fmt.Sprintf("CREATE USER %s WITH PASSWORD %s", username, quotedPassword)
+	query := fmt.Sprintf("CREATE USER \"%s\" WITH PASSWORD %s", username, quotedPassword)
 	_, err := adapter.db.Exec(ctx, query)
 	if err != nil {
 		return err
 	}
 
-	query = fmt.Sprintf("GRANT ALL PRIVILEGES ON DATABASE %s TO %s;", database, username)
+	query = fmt.Sprintf("GRANT ALL PRIVILEGES ON DATABASE \"%s\" TO \"%s\";", database, username)
 	_, err = adapter.db.Exec(ctx, query)
 
 	return err
@@ -72,19 +72,19 @@ func (adapter postgresAdapter) DeleteDatabaseUser(ctx context.Context, database
 	}
 	defer conn.Close(ctx)
 
-	query := fmt.Sprintf("DROP OWNED BY %s;", username)
+	query := fmt.Sprintf("DROP OWNED BY \"%s\";", username)
 	_, err = conn.Exec(ctx, query)
 	if err != nil {
 		return err
 	}
 
-	query = fmt.Sprintf("REVOKE ALL PRIVILEGES ON DATABASE %s FROM %s; REVOKE ALL ON SCHEMA public FROM %s;", database, username, username)
+	query = fmt.Sprintf("REVOKE ALL PRIVILEGES ON DATABASE \"%s\" FROM \"%s\"; REVOKE ALL ON SCHEMA public FROM \"%s\";", database, username, username)
 	_, err = adapter.db.Exec(ctx, query)
 	if err != nil {
 		return err
 	}
 
-	query = fmt.Sprintf("DROP USER %s;", username)
+	query = fmt.Sprintf("DROP USER \"%s\";", username)
 	_, err = adapter.db.Exec(ctx, query)
 	return err
 }
diff --git a/adapters/utils_test.go b/adapters/utils_test.go
index 95517ce..b068df2 100644
--- a/adapters/utils_test.go
+++ b/adapters/utils_test.go
@@ -12,9 +12,9 @@ type ClientConnectTest func(ctx context.Context, databaseName string, databaseUs
 func testHelper(t *testing.T, ctx context.Context, adapter adapters.DatabaseAdapter, clientConnectTest ClientConnectTest) {
 	// given
 	var err error
-	databaseName := "guestbook"
-	databaseUsername := "guestbook_admin"
-	databasePassword := "top-secret-123"
+	databaseName := "guestbook-admin_123"
+	databaseUsername := "guestbook-admin_123"
+	databasePassword := "top_secret-123!"
 
 	t.Cleanup(func() {
 		if err = adapter.DeleteDatabaseUser(ctx, databaseName, databaseUsername); err != nil {