Connecting to Microsoft SQL Server

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Connecting to Microsoft SQL Server

• Tuc Goodwin

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Introduction

• 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.

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Agenda

• Overview What do you have to know
• Security Modes
• Database Interfaces
• Connecting to a SQL Server Data Source

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Overview What do you have to know

1. Server Name
2. Security Information
3. Database name
4. Data Interface / API to use
5. Steps to connect

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Security Modes

• There are two types of modes
• Standard Mode (default)
• Integrated Mode

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Database Interfaces
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Connecting to a SQL Server Data Source

• 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)

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Connecting with Data Control

• Natively it cant be done
• It uses DAO.
• However
• If a Jet Database has already connected to a SQL
  Server database, then we can connect to that.
• Downside
• Were indirectly connecting (through JET)
• Probably not the most efficient way.
• DEMO

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Connecting with ADO Data Control (ADO)

• Natively it connects fine
• Its ADO
• Set the Connection string property
• Set the RecordSource property
• DEMO

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Connecting with ADO Data Control (DSN)

• Natively it connects fine
• Its ODBC
• Set the Connection string property
• Set the RecordSource property

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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 -gt Administrative Tools -gt Data
Sources (ODBC) Start Menu -gt Administrative Tools
-gt Data Sources (ODBC)
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Demo Setting up a Data Source Name
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Example of a File DSN (Standard)
ODBC DRIVERSQL Server UIDsa DATABASEStateU WS
IDDALGOODWIN3 APPMicrosoft Access SERVERdalgoo
dwin3
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Example of a File DSN (Integrated)
ODBC DRIVERSQL Server UIDtgoodwin Trusted_Conn
ectionYes DATABASEpubs WSIDDALGOODWIN3 APPMicr
osoft Open Database Connectivity SERVERDALGOODWIN
3\DALGOODWIN32000
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DEMO ADO Control with DSN
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Connecting with ADO Data Control (UDL)

• Natively it connects fine
• Its ADO
• Set the Connection string property
• Set the RecordSource property

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Creating a UDL

• Create a file with a .UDL extention.
• Double-click on the icon.

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Set the Provider
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Set the Connection and Test
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Examine the UDL
oledb Everything after this line is an OLE DB
initstring ProviderSQLOLEDB.1Integrated
SecuritySSPIPersist Security InfoFalseUser
IDsaInitial CatalogpubsData
Sourcedalgoodwin3\dalgoodwin32000
Look familiar? Can you say Connection string
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DEMO ADO Control with UDL
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Connecting with ADO (Programmatically)

• Declare an ADO connection object
• Set the Connection String
• Open the Connection
• Instantiate the recordset etc.

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DEMO Connect with ADO
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Other ways

• RDO Similar to ADO. Use DSN or DSN-less
  connection strings
• ODBCDirect Too much for this lesson
• ODBC lots of API calls. Better off with the
  ADO abstraction.

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Summary

• We discussed establishing an connection to a SQL
  Server Database.
• We learned that there is an easy way and a hard
  way
• Questions?