ODBCODBC thethe

MIDDLEWAREMIDDLEWARE thatthat

CONNECTS!CONNECTS!

Presented byCarter-Davis-WagnerCSIS 4490 - Spring 2002 Dr. Hoganson

Conceptual Office Layout at Bob’s Bikes

PC at front counter

PC at loading dock

PC in Bob’s office

Server in back office

LAN

How does it connect?

Clients

LAN Server(s)

FirewallInternet

ODBC layer

ODBC - Open DataBase Connectivity - from Microsoft

•Provides interface•Provides interface to MySQL Database to access the tables for Bob’s Bike Shop using ActiveX

•Interfaces with Word to create form letters with MSQuery

•Interfaces with Excel to extract data to create charts and graphs using VBA

•Also may interface with

•PowerPoint

•Access Database

•Products from other Vendors

Bob’s Bike Shop Inventory SystemSpecifications

Server Client 1 P100 server IBM ThinkPad 48MB RAM Windows 95 SCSI Hard Drive Windows NT 4.0 Workstation Client 2 DHCP Addressing IBM ThinkPad Windows 2000 ProfessionalHub 3Com Model TP4 Database 4 Ports MySQL http://www.mysql.org MySQL ODBC Driver Cable Category 5 Software Visual Basic MS Excel MS Word

ODBC Configuration

MySQL has a click and go setup program to install ODBC Drivers

Configure the drivers to access the data

•Data Set Name•Location (IP address or server name)•Database name•User ID and password (as required)

Select the MySQL ODBC Driver...

MySQL

Configuration screen for the ODBC driver

MySQL

Database Administratio

nScreen

MySQL Manager

Database csis4490 has 2 Tables•Manufacturer•Inventory

The Database The Database Interface...Interface...

Table Statements

use csis4490;

create table inventory (model char(10) Not Null, color char(10) Not Null, size int(11) Not Null Default 0, gender char(1) Not Null, instock int(11) Default 0, onorder int(1) Not Null, manid int(9) Not Null Default 0, invid int(9) Not Null Auto_Increment,Primary Key (invid), Unique id (invid),FOREIGN KEY(manid) REFERENCES manufacturer(manid) )

create table manufacturer (company char(25) Not Null, address1 char(25) Not Null, address2 char(25),city char(15) Not Null, state char(12) , country char(12) Not Null, mailcode char(12), contact char(25), phone char(12), email char(30),manid int(9) Not Null Auto_Increment, Primary Key (manid), Unique id (manid) )

MySQL QueryMySQL Query

Select * from inventory

Word: Mail Merge using MSQuery to create a form letter

Word: Mail Merge using MSQuery to create a form letter

Word: Fields that are extracted from the database

The fields in << >> are extracted from the database for use in the form letter.

Word: Completed letter with name and address!

Excel: Data can be extracted to spreadsheet using MSQuery

Excel: Data can be also be accessed using code (VBA).

‘select DSNconString = "DSN=csis4490"‘connectthisconn = SQLOpen(conString, , 2)If IsError(thisconn) Then Error 9999 'invalid response from servermysql$ = "select model, color, size, instock from inventory"'send querySheets("Status").Range("b4") = sqlexecquery(thisconn, StringToArray(mysql$))‘save error (if any)Sheets("Status").Range("b17") = sqlerror()‘define destination cell for each field retrievedSheets("Status").Range("b5") = sqlbind(thisconn, 1, Sheets("Data").Range("a6"))Sheets("Status").Range("b19") = sqlerror()Sheets("Status").Range("c5") = sqlbind(thisconn, 2, Sheets("Data").Range("b6"))Sheets("Status").Range("b21") = sqlerror()

Excel: Generate chart from the database.

ODBC Troubleshooting…

Thank you !