====== Case: Cached Updates ======
Cached updates can be difficult to understand / diagnose, Marshal allows you to look at the dataset and database at the same time to understand what is pending and written to the actual database.
===== Implementation details =====
For this demo the form create event is used to start Marshal automatically.  Here is the code:\\
<code pascal>uses
  dmMainComp, 
  VCL.SE.RTTK.Marshal, //Reference to the Marshal Unit
  Vcl.Clipbrd; //used to copy query to clipboard

{$R *.dfm}

procedure TfrmCachedUpdates.FormCreate(Sender: TObject);
begin
  inherited FormCreate(Sender);
  RegisterDS(qryProducts);
  TSERTTKWorker.ShowMarshal; //added to start Marshal
end;</code>
===== Recreation =====
Start the demo sample Qry_CachedUpdates. Dock the Marshal form right and the query form left.
  - Ordered List ItemConnect to the SQLite_Demo database. 
  - Click the button "Copy query to clipboard".
  - On the Marshal form expand dmlmaincomp and click on dbmain to inspect the database connection.
  - Paste the query in the "Query Tool" tab and then click execute to run the query.
  - Expand frmCachedUpdates and select qryProducts, then select the dataset grid tab to browse the dataset.