Backend Developmentbxmaximum/bitrix-framewor...
bitrix-database
Covers direct database work in Bitrix — Application::getConnection(), Connection, MysqliConnection, SqlHelper, SqlExpression, raw SQL queries via query()/queryExecute()/queryScalar(), transactions (startTransaction/commitTransaction/rollbackTransaction), DDL and schema migrations, bulk operations (insertBatch, addMulti), additional connections via the connections section in .settings.php. Applied when ORM is insufficient — bulk operations, raw SQL, migrations, working with external databases, and building custom queries. Key terms — Connection, SqlHelper, SqlExpression, transaction, raw SQL, bulk insert, DDL, migration.