Changing database structure in vb.net
I need a resource that shows how to add/remove/change tables fields and most importantly relationships in an access database using vb.net.
Try this as a starter
All you need is a connection to the database and then basic T-SQL syntax:
Dim myScalarQuery As String = "ALTER TABLE Table1 ADD Field4 VARCHAR(20) NULL"
Dim myConnectionString As String = "Provider=Microsoft.Jet.OL
Dim myConnection As New OleDb.OleDbConnection(myCo
Dim myCommand As New OleDb.OleDbCommand(myScala
myCommand.Connection.Open(
myCommand.ExecuteNonQuery
myConnection.Close()
The above example adds a text field to an already created table.
As for relationships I'm not sure if you can create them with T-SQL. Alternatively you can use the Access Object adding a reference to the Microsoft Access Object Library.
Dim myScalarQuery As String = "ALTER TABLE Table1 ADD Field4 VARCHAR(20) NULL"
Dim myConnectionString As String = "Provider=Microsoft.Jet.OL
Dim myConnection As New OleDb.OleDbConnection(myCo
Dim myCommand As New OleDb.OleDbCommand(myScala
myCommand.Connection.Open(
myCommand.ExecuteNonQuery
myConnection.Close()
The above example adds a text field to an already created table.
As for relationships I'm not sure if you can create them with T-SQL. Alternatively you can use the Access Object adding a reference to the Microsoft Access Object Library.
ASKER
jerete,
I really need to know how to alter the relationship to award the points. I am trying to get rid of the autonumber fields and replace them with GUID fields which will require me to change the relationship. Thanks for the input
I really need to know how to alter the relationship to award the points. I am trying to get rid of the autonumber fields and replace them with GUID fields which will require me to change the relationship. Thanks for the input
ASKER CERTIFIED SOLUTION
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