Пространство имен Bitrix\Main\DB

Классы
class	ArrayResult
class	Connection
class	ConnectionException
class	Exception
class	MssqlConnection
class	MssqlResult
class	MssqlSqlHelper
class	MysqlCommonConnection
class	MysqlCommonSqlHelper
class	MysqlConnection
class	MysqliConnection
class	MysqliResult
class	MysqliSqlHelper
class	MysqlResult
class	MysqlSqlHelper
class	OracleConnection
class	OracleResult
class	OracleSqlHelper
class	Paginator
class	PgsqlConnection
class	PgsqlResult
class	PgsqlSqlHelper
class	Result
class	ResultIterator
class	SqlException
class	SqlExpression
class	SqlHelper
class	SqlQueryException
class	TransactionException