1 Introduction

This document describes details of the message-based protocol Sedna XML Database server uses for communication with clients through the TCP/IP sockets. Higher level application programming interfaces are built over this protocol.

This document describes versions 1.0, 2.0, 3.0 and 4.0 of the protocol. It consists of three parts: section 2 describes the basic message structure, section 3 defines communication protocol and 4-th section describes the detailed format of each message.