[asp.net] CREATE TABLE/Judge data table for Oracle database

To create a table for an Oracle database:
Dim myConnectionString as String
Dim MyConnection as OleDbConnection
Dim MyCommand as OleDbCommand
Dim Mycreatesql as String
myConnectionString = "provider= ' oraoledb.oracle.1"; User id=[user ID];D ata source=[data Source]; Extended properties=; Persist Security info=true; Password=[password] "
MyConnection = New OleDbConnection (myconnectionstring)
Mycreatesql = "CREATE TABLE (ABC VARCHAR2 (10))"
mycommand = New OleDbCommand (mycreatesql)
Mycommand.connection = myconnection
Myconnection.open ()
Mycommand.executenonquery ()
MyCommand.Connection.Close ()
To determine whether a data table already exists:
' DataBaseName--table name
Private Function sqlexistdatabase (ByVal DataBaseName as String) as Boolean
Dim Orcconndb as OracleConnection
Dim Strselect as String
Dim Odaexistdatabase as OracleDataAdapter
Dim Dsexistdatabase as New DataSet
ORCCONNDB = New OracleConnection
orcconndb.connectionstring = "data source=[data source];" _
& "Persist Security Info=false" _
& user Id=[]user ID; Password=[password]; "
Orcconndb.open ()
Strselect = "SELECT count (*) from user_tables where Table_name= '" & Replaceen (DataBaseName) & "'"
Odaexistdatabase = New OracleDataAdapter (strselect, ORCCONNDB)
Odaexistdatabase.fill (Dsexistdatabase)
If dsexistdatabase.tables (0). Rows (0) (0) = 0 Then
Orcconndb.close ()
Return False
Else
Orcconndb.close ()
Return True
End If
End Function
' lowercase English word converted to capital English
' Enstring--string
Private Function Replaceen (ByVal enstring As String) as String
Dim I as Integer
For i = ASC ("a") to ASC ("Z")
enstring = Enstring.replace (CChar (ChrW (i)), CChar (ChrW (i-32))
Next
Return enstring
End Function