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Connecting to Microsoft SQL
Server
Tuc Goodwin
Introduction
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We are going to discuss establishing an
connection to a SQL Server Database.
You will learn that there is an easy way and a
hard way.
Agenda
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Overview – What do you have to know…
Security Modes
Database Interfaces
Connecting to a SQL Server Data Source
Overview – What do you have to know…
1.
2.
3.
4.
5.
Server Name
Security Information
Database name
Data Interface / API to use
Steps to connect…
Security Modes
There are two types of modes:
 Standard Mode (default)
 Integrated Mode
Database Interfaces
Data
Object
Interfaces
Application
Programming
Interfaces
ADO
RDO
VBSQL
DAO
OLE DB
ODBC
DBLibrary
JET
Other Data
Sources
Relational
Databases
Connecting to a SQL Server Data Source
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Connecting with Data Control
Connecting with ADO Data Control (ADO)
Connecting with ADO Data Control (DSN)
Connecting with ADO Data Control (UDL)
Connecting with ADO (Programmatically)
Connecting with Data Control
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Natively it can’t be done…
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However…
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It uses DAO.
If a Jet Database has already connected to a SQL
Server database, then we can connect to that.
Downside
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We’re indirectly connecting (through JET)
Probably not the most efficient way.
DEMO
Connecting with ADO Data Control
(ADO)
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Natively it connects fine
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It’s ADO
Set the Connection string property
Set the RecordSource property
DEMO
Connecting with ADO Data Control
(DSN)
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Natively it connects fine

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It’s ODBC
Set the Connection string property
Set the RecordSource property
Data Source Name (DSN)
A DSN is a registry entry (Machine DSN) or text file
(File DSN) that contains information about a
database and the SQL Server it resides on.
Control Panel ->
Administrative Tools -> Data
Sources (ODBC)
Start Menu -> Administrative
Tools -> Data Sources
(ODBC)
Demo – Setting up a Data Source Name
Example of a File DSN (Standard)
[ODBC]
DRIVER=SQL Server
UID=sa
DATABASE=StateU
WSID=DALGOODWIN3
APP=Microsoft® Access
SERVER=dalgoodwin3
Example of a File DSN (Integrated)
[ODBC]
DRIVER=SQL Server
UID=tgoodwin
Trusted_Connection=Yes
DATABASE=pubs
WSID=DALGOODWIN3
APP=Microsoft Open Database Connectivity
SERVER=DALGOODWIN3\DALGOODWIN32000
DEMO – ADO Control with DSN
Connecting with ADO Data Control
(UDL)

Natively it connects fine

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It’s ADO
Set the Connection string property
Set the RecordSource property
Creating a UDL
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Create a file with a .UDL extention.
Double-click on the icon.
Set the Provider
Set the Connection and Test
Examine the UDL
[oledb]
; Everything after this line is an OLE DB initstring
Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist
Security Info=False;User ID=sa;Initial Catalog=pubs;Data
Source=dalgoodwin3\dalgoodwin32000
Look familiar?
Can you say “Connection string”
DEMO – ADO Control with UDL
Connecting with ADO (Programmatically)
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Declare an ADO connection object
Set the Connection String
Open the Connection
Instantiate the recordset etc….
DEMO – Connect with ADO
Other ways
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RDO – Similar to ADO. Use DSN or DSNless connection strings
ODBCDirect – Too much for this lesson
ODBC – lots of API calls. Better off with the
ADO abstraction.
Summary
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We discussed establishing an connection to a
SQL Server Database.
We learned that there is an easy way and a
hard way
Questions?