Database Programming with FireDAC Bob Swart (aka “Dr.Bob”) Bob Swart Training & Consultancy (eBob42) Delphi Benelux 2016 Congress 26 May 2016, Eindhoven

Agenda FireDAC Architecture Monitoring and Tracing Cached Updates TFDMemTable Local SQL Migration from BDE, ADO, DBX (DataSnap)

FireDAC Architecture Universal Data Access Components TFDManager, TFDConnection TFDQuery, TFDTable, TFDStoredProc TFDMemTable TFDLocalSQL TFDPhysxxxDriverLink TFDGUIxWaitCursor

Monitoring and Tracing Monitoring DBMS connection (real-time) –FireDAC Monitor (tools menu) Tracing between FD and DBMS (log) –TFDMoniFlatFile/Remote/CustomClientLink EventKinds, ShowTraces, Tracing Remote  FDMonitor Custom  OnOutput event handler –TFDConnection.Params.MonitorBy

Cached Updates CachedUpdates = True –ChangeCount, Undo options –CancelUpdates / Apply/CommitUpdates UpdateOptions –UpdateMode –RefreshMode

TFDMemTable In-memory datasets –Can contain multiple datasets! Successor of TClientDataSet –No requirement for MIDAS.DLL or MidasLib Useful in DataSnap applications

Local SQL TFDLocalSQL Uses SQLite driver –TFDConnection, DriverName = SQLite –TFDPhysSQLiteDriverLink Useful for combining tables from heterogeneous databases!

Migration to FireDAC BDE Migration –TSession  TFDManager –TDatabase  TFDConnection –TQuery  TFDQuery –TSortedProc  TFDStoredProc –TTable  TFDTable

Migration to FireDAC ADO Migration –TADOConnection  TFDConnection –TADOQuery  TFDQuery –TADOSortedProc  TFDStoredProc –TADOTable  TFDTable Not really necessary

Migration to FireDAC dbExpress Migration –TSQLConnection  TFDConnection –TSQLQuery  TFDQuery –TSQLSortedProc  TFDStoredProc –TSQLTable  TFDTabe –Need no TDataSetProvider + TClientDataSet is

Migration to FireDAC dbExpress DataSnap Migration –TSQLConnection  TDSRestConnection –TClientDataSet  TFDMemTabe –No IAppServer interface (normal data mod) –No TDataSetProvder (server side) –No TDSProviderConnection (client side) is

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