MX 2.x)

ODBC/MX Client Overview

HP NonStop ODBC/MX Driver for Windows—527888-004

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Connection Mapping

An ODBC client application can connect to the default data source without needing to

create an MXCS SQL server data source.

Connection Mapping

MXCS maps the client data source name in an incoming connection request to the

server data source name (names are case sensitive). If the name matches but the

server data source is not started, the connection request is rejected. If the server data

source name does not exist, the association server routes the connection to the default

data source. If the default data source is not started, the connection request is

rejected.

After a data source name is assigned, the association server uses any MXCS SQL

server that was previously used by the same userid. If no such server is found, the

association server assigns the first available server to the connection and reinitializes

Figure 1-1. Connection Data Flow

Tdm_Default_DataSourceOther Data Source: DS1

1. Request connection to DS1

2. Connection to DS1 granted

3. Client connects to server

4. Server accepts connection

ODBC Client

Application

MXCS

Association

Server

MXCS

SQL Server

MXCS

SQL Server

ODBC API

ODBC Driver Manager

ODBC/MX Driver

VST002.vsd