function Get-TableObj
{
    # Create the object
    $Obj = [PSCustomObject]@{
        TableName = $null
        FieldList = New-Object System.Collections.Generic.List[PSObject]
    }
    # Add the GetDropTableCmd Method
    $Obj | Add-Member -Name "GetDropTableCmd" -MemberType ScriptMethod -Value {
        $Sb = New-Object System.Text.StringBuilder
        # Add the Cmd
        [void]$Sb.AppendLine("DROP TABLE [$($this.TableName)]")
        $SqlCmd = Get-SqlCommand -CommandText $Sb.ToString()
        # Return the cmd
        Return $SqlCmd
    }
    # Add the GetCreateTableCmd Method
    $Obj | Add-Member -Name "GetCreateTableCmd" -MemberType ScriptMethod -Value {
        $FieldList = New-Object System.Collections.Generic.List[string]
        foreach ($i in $this.FieldList) {
            $FieldList.Add("$($i.Field) $($i.DataType)")
        }
        $Sb = New-Object System.Text.StringBuilder
        # Begin the CREATE TABLE Command
        [void]$Sb.AppendLine("CREATE TABLE [$($this.TableName)] ($([string]::Join(",",$FieldList)))")
        $SqlCmd = Get-SqlCommand -CommandText $Sb.ToString()
        # Return the cmd
        Return $SqlCmd
    }
    
    return $Obj
}

$date = Get-Date -Format yyyy-MM-dd
$ScriptDir = Split-Path $script:MyInvocation.MyCommand.Path

# Create a list to hold the tables
$TableList = New-Object System.Collections.Generic.List[psobject]

# Create a Table Object
$Obj = Get-TableObj
$Obj.TableName = "AdministratorsGroup"
$Obj.FieldList.Add([PSCustomObject]@{ Field = "Computer" ; DataType = "varchar(max)"})
$Obj.FieldList.Add([PSCustomObject]@{ Field = "Domain" ; DataType = "varchar(max)"})
$Obj.FieldList.Add([PSCustomObject]@{ Field = "Name" ; DataType = "varchar(max)"})
$Obj.FieldList.Add([PSCustomObject]@{ Field = "ObjTimeStamp" ; DataType = "DateTime"})
# Add the object to the list
$TableList.Add($Obj)

# Create an XML doc:
[xml]$Doc = New-Object System.Xml.XmlDocument
# Create and add the declaration
$dec = $Doc.CreateXmlDeclaration("1.0","UTF-8",$null)
[void]$doc.AppendChild($dec)
# Create the root node
$root = $doc.CreateNode("element","Tables",$null)
# Loop through the table list
foreach ($i in $TableList) {
    # Create an element for the each Table
    $TableNode = $doc.CreateNode("element","Table",$null)
    # Set the Table Name
    $TableNode.SetAttribute("Name",$($i.TableName))
    # Create the Fields Node
    $FieldsNode = $doc.CreateNode("element","Fields",$null)
    # Loop through the fields
    foreach ($j in $i.FieldList) {
       # Create a field node
       $FieldNode = $doc.CreateNode("element","Field",$null)
       # Set the Name and DataType
       $FieldNode.SetAttribute("Name",$($j.Field))
       $FieldNode.SetAttribute("DataType",$($j.DataType))
       [void]$FieldsNode.AppendChild($FieldNode)
    }
    # Add the Fields Node to the Table Node
    [void]$TableNode.AppendChild($FieldsNode)
    # Add the Table Node to the Root
    [void]$root.AppendChild($TableNode)
}
# Add the Root to the doc
[void]$doc.AppendChild($root)
# Save the XML file
$doc.save("$($ScriptDir)\DatabaseTables.xml")

<?xml version="1.0" encoding="UTF-8"?>
<Tables>
  <Table Name="AdministratorsGroup">
    <Fields>
      <Field Name="Computer" DataType="varchar(max)" />
      <Field Name="Domain" DataType="varchar(max)" />
      <Field Name="Name" DataType="varchar(max)" />
      <Field Name="ObjTimeStamp" DataType="DateTime" />
    </Fields>
  </Table>
</Tables>