This page contains a quick introduction to setting up and using the Universal Data Access Components library. It gives a walkthrough for each part of the UniDAC usage process and points out the most relevant related topics in the documentation.
Universal Data Access Components (UniDAC) is a component library that provides connectivity to Oracle, SQL Server, MySQL, InterBase, Firebird, PostgreSQL, SQLite, DB2, Microsoft Access, Advantage Database Server, Adaptive Server Enterprise, DBF, NexusDB, and other databases (using ODBC provider) for Delphi, C++Builder and Lazarus (FPC), and helps you develop fast cross-database applications with these environments.
Many UniDAC classes are based on VCL, LCL and FMX classes and interfaces. UniDAC is a complete replacement for Borland Database Engine, provides native database connectivity, and is specifically designed as a universal interface to access different kinds of databases.
An introduction to UniDAC is provided in the Overview section.
A list of the UniDAC features you may find useful is listed in the Features section.
An overview of the UniDAC component classes is provided in the Components List section.
To install UniDAC, complete the following steps.
For BDS 2006 and Turbo - unidac100d10*.exe
For Delphi 7 - unid100d7*.exe
For more information, visit the the UniDAC download page.
By default, the UniDAC installation program should install compiled UniDAC libraries automatically on all IDEs.
To check if UniDAC has been installed properly, launch your IDE and make sure that a UniDAC page has been added to the Component palette and that a UniDAC menu was added to the Menu bar.
If you have bought UniDAC Standard Edition with Source Code or UniDAC Professional Edition with Source Code, you will be able to download both the compiled version of UniDAC and the UniDAC source code. The installation process for the compiled version is standard, as described above.The UniDAC source code must be compiled and installed manually. Consult the supplied ReadmeSrc.html file for more details.
To find out what gets installed with UniDAC or to troubleshoot your UniDAC installation, visit the Installation topic.
The UniDAC installation package includes a number of demo projects that demonstrate UniDAC capabilities and use patterns. The UniDAC demo projects are automatically installed in the UniDAC installation folder.
To quickly get started working with UniDAC, launch and explore the introductory UniDAC demo project, UniDACDemo, from your IDE. This demo project is a collection of demos that show how UniDAC can be used. The project creates a form which contains an explorer panel for browsing the included demos and a view panel for launching and viewing the selected demo.
For example, if you are using Borland Developer Studio 2006, the demo project may be found at
\Program Files\Devart\UniDAC for Delphi 2006\Demos\Win32\UniDACDemo\UniDACDemo.bdsproj
At this point, you will be able to browse through the available demos, read their descriptions, view their source code, and see the functionality provided by each demo for interacting with a server. However, you will not be able to actually retrieve data from a server or execute commands until you connect to the database.
Now you have a fully functional interface to your server. You will be able to go through the different demos, to browse tables, create and drop objects, and execute commands.
Warning! All changes you make to the database you are connected to, including creating and dropping objects used by the demo, will be permanent. Make sure you specify a test database in the connection step.
"An error has occurred: ORA00955: name is already being used by an existing object. ... Ignore this exception?"
This is a standard warning from the object execution script. Click "Yes to All" to ignore this message. UniDACDemo will create the UniDACDemo objects on the server you have connected to.
Working with components
A collection of projects that show how to work with the basic UniDAC components.
A collection of projects that show off the UniDAC technology and demonstrate some ways of working with data.
A collection of projects that demonstrate how to incorporate features of specific database servers.
UniDAC is accompanied by a number of other demo projects. A description of all UniDAC demos is located in the Demo Projects topic.
By default, to compile a project that uses UniDAC classes, your IDE compiler needs to have access to the UniDAC dcu (obj) files. If you are compiling with runtime packages, the compiler will also need to have access to the UniDAC bpl files. All appropriate settings for both these scenarios should take place automatically during the installation of UniDAC. You should only need to modify your environment manually if you are using one of the UniDAC editions that comes with source code - UniDAC Professional Edition with Source Code or UniDAC Standard Edition with Source Code.
You can check that your environment is properly configured by trying to compile one of the UniDAC demo projects. If you have no problems compiling and launching the UniDAC demos, your environment has been properly configured.
For more information about which library files and environment changes are needed for compiling UniDAC-based projects, consult the Installation topic.
To deploy an application that uses UniDAC, you will need to make sure the target workstation has access to the following files.
If you are evaluating deploying projects with UniDAC Trial Edition, you will also need to deploy some additional bpl files with your application even if you are compiling without runtime packages. As another trial limitation for C++Builder, applications written with UniDAC Trial Edition for C++Builder will only work if the C++Builder IDE is launched. More information about UniDAC Trial Edition limitations is provided here.
A list of the files which may need to be deployed with UniDAC-based applications is included in the Deployment topic.
The UniDAC documentation describes how to install and configure UniDAC, how to use UniDAC Demo Projects, and how to use the UniDAC libraries.
The UniDAC documentation includes a detailed reference of all UniDAC components and classes. Many of the UniDAC components and classes inherit or implement members from other VCL and LCL classes and interfaces. The product documentation also includes a summary of all members within each of these classes. To view a detailed description of a particular component, look it up in the Components List section. To find out more about a specific standard VCL or LCL class a UniDAC component is inherited from, see the corresponding topic in your IDE documentation.
At install time, the UniDAC documentation is integrated into your IDE. It can be invoked from the UniDAC menu added to the Menu Bar, or by pressing F1 in Object Inspector or on a selected code segment.
There are a number of resources for finding help on using UniDAC classes in your project.
For more information, consult the Getting Support topic.