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4/18/2024 3:31:01 AM

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Database Access

Preliminary info about referencing databases

If you host a domain with us, you can use one or more databases with your site (e.g.: Microsoft Access, Microsoft SQL Server, Microsoft Visual FoxPro, etc.) Take a look at the information below for information, tips, etc. regarding incorporating a database into your website.

ASP.NET 2.0 - 4.0

ASP.NET users do not need and should not use DSNs (data source names) to access databases. ASP.NET can directly access databases which is more efficient than using ODBC DSNs.

Sample /Web.config file:

<?xml version="1.0" ?> <connectionStrings> <!-- The following two connectionString values are identical. --> <add name="MyDbConn1" connectionString="Server=SQLServerName;Database=MyDatabaseName;Trusted_Connection=Yes;"/> <add name="MyDbConn2" connectionString="Data Source=SQLServerName;Initial Catalog=MyDatabaseName;Integrated Security=SSPI;"/> </connectionStrings>

ASP (Active Server Pages)

ASP users do not need and should not use DSNs (data source names) to access databases. ASP can directly access databases which is more efficient than using ODBC DSNs.

Sample /global.asa file:

<script language="vbscript" runat="server"> ' Use the following METADATA line instead of referencing ' C:\Program Files\Common Files\System\ado\ <!--METADATA TYPE="typelib" UUID="2A75196C-D9EB-4129-B803-931327F72D5C" NAME="Microsoft ActiveX Data Objects 2.8 Library"--> Sub Application_OnStart ' ' ' Use the appropriate connection string (see the above references for details): ' Microsoft SQL Server database: ' Application("ConnectionString") = "Provider=SQLOLEDB;" _ & "Data Source=SQLServerName;" _ & "Database=MyDatabaseName;" _ & "Integrated Security=SSPI;" ' Microsoft Access 2007, 2010 database: ' Application("ConnectionString2") = "Provider=Microsoft.ACE.OLEDB.12.0;" _ & "Data Source=" & Server.MapPath("/db/MyDatabaseFile.accdb") & ";" _ & "User ID=MyUserID;" _ & "Password=MyPassword;" ' Microsoft Access 2000, 2002, 2003 database: ' Application("ConnectionString3") = "Provider=Microsoft.Jet.OLEDB.4.0;" _ & "Data Source=" & Server.MapPath("/db/MyDatabaseFile.mdb") & ";" _ & "User ID=MyUserID;" _ & "Password=MyPassword;" End Sub </script>

Sample ASP file that references the database: example.asp

<%@ Language="VBScript" %> <% Option Explicit %> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Sample ASP page referencing a database</title> </head> <body> <div id="memberlist"> <% Call DisplayMemberList %> </div> </body> </html> <% Sub DisplayMemberList Dim dbConn, cmd, MemberList, RecordCount Set dbConn = Server.CreateObject("ADODB.Connection") dbConn.ConnectionString = Application("ConnectionString") ' obtained from /global.asa file dbConn.Mode = adModeRead ' dbConn.CursorLocation = adUseClient ' used to obtain RecordCount dbConn.Open Set cmd = CreateObject("ADODB.Command") Set cmd.ActiveConnection = dbConn ' cmd.CommandText = "sp_MyStoredProcedure" ' cmd.CommandType = adCmdStoredProc ' cmd.Prepared = True ' Set MemberList = cmd.Execute ' RecordCount = MemberList.RecordCount Response.Write "Member count: " & RecordCount & "<br>" & vbcrlf If RecordCount > 0 Then Do While Not MemberList.EOF Response.Write MemberList("FirstName") & " " & MemberList("LastName") _ & " - " & MemberList("Age") & "<br>" & vbcrlf MemberList.MoveNext Loop Else Response.Write "No records were found." & vbcrlf End If MemberList.Close Set MemberList = Nothing Set cmd = Nothing dbConn.Close Set dbConn = Nothing End Sub %>


ColdFusion 5 users should use OLEDB DSNs (data source names) instead of ODBC DSNs to access their databases. Network Tallahassee can create DSNs on the web server for you.

Sample /Application.cfc file (ColdFusion MX):

<cfcomponent> <cfset"MyWebSite"> <cffunction name="onApplicationStart"> <cfset application.dsn="MyDSNname"> </cffunction> </cfcomponent>

Sample /Application.cfm file (ColdFusion 5):

<cfapplication name="MyWebSite"> <cfset application.dsn="MyDSNname">

Sample ColdFusion file that references the database: example.cfm

<!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Sample ColdFusion page referencing a database</title> </head> <body> <cfquery name="MemberList" datasource="#application.dsn#"> EXECUTE sp_MyStoredProcedure <!--- or some other SQL command such as SELECT FirstName, LastName, Age FROM Members WHERE Age >= 25 ORDER BY LastName, FirstName ---> </cfquery> <div id="memberlist"> <cfoutput query="MemberList"> #FirstName# #LastName# - #Age#<br> <cfoutput> </div> </body> </html>