Database Reference
In-Depth Information
•
Interactive command prompts so the developer does not have to
memorize the syntax for using certain built-in procedures.
•
Automatic code generation: A fairly sophisticated application can
be developed with negligible coding from the developer. Code is
generated in Object Pascal or C++.
•
Code accessibility: For more complex/sophisticated applications,
the developer can easily access the generated code and modify it.
Each Delphi project may include several types of files. The more common file
types are: project files (extensions BDSPROJ and DPR), a Pascal unit file (extension
PAS) with Object Pascal code for each operation with a corresponding form, and a form
file (extension DFM) for each operation with a corresponding Pascal unit. By using the
tool palettes and applying Object Pascal (or C++) code, other components can be easily
added to the project. Some commonly used application building blocks are mentioned in
Figure
20-3
.
Figure 20-3.
Commonly Used Building Blocks in Delphi
Theses tools provide software engineers and application developers with much
flexibility; the tools can be used to build a wide range of software applications including:
•
Traditional database applications
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Client-server applications
•
E-Business applications
•
Web applications and services using W3C compliant technologies
such as SOAP, XML, WSDL
•
Web applications frameworks compatible with Apache, IIS and
Netscape Web servers
•
Text editors and other GUI-based applications
Delphi generates all code in Object Pascal. The code can be easily accessed and
modified by the application developer. In practice, this is normally done, in order to
create an acceptable user interface.
