DDL file format description

Many people share .ddl files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .ddl file can be edited, converted or printed with. On this page, we try to provide assistance for handling .ddl files.

3 filename extension(s) found in our database.

.ddl - Data Definition Language File

The DDL development files are related to Microsoft SQL Server. The DDL file is a Data Definition Language file. A Data Definition Language (DDL) is a computer language for defining data structures. The term was first introduced in relation to the Codasyl database model, where the schema of the database was written in a Data Definition Language describing the records, fields, and "sets" making up the user Data Model.

Microsoft SQL Server
Development files
- / -
Data Definition Language File related extensions:
Microsoft Visual Studio IntelliTrace Log
FinalBuilder Persistent Variables File
Adobe Captivate Commentable SWF
C4 Engine Binary Model Data
CMSIS Pack Project Description
RISCWatch Processor Configuration File

.ddl - Ovation Pro DDL

The DDL data files are related to Ovation Pro. The DDL file is an Ovation Pro DDL. Ovation Pro is a Desktop Publishing (DTP) program for Windows.

Ovation Pro
Data files
- / -
Ovation Pro DDL related extensions:
ProShow Producer Slide Styles Data
Substance Painter Data
PLINK Cochran Mantel Haenszel IxJxK Test Report
Garmin Region File
MobTV P2P File
HydroCAD Rainfall Curve Data

.dd - C64 Doodle Image

The DD graphic files are related to XnView. The DD file is a C64 Doodle Compressed Image. Doodle is a software package for the Commodore 64 computer that allows users to draw graphics.

Graphic files
- / -
C64 Doodle Image related extensions:
ZX Spectrum Hobetta Image
Pocket PC Bitmap Image
Amapi Image
Sony Mavica Picture
GoDot Image
TI-73 Bitmap

Naturally, other applications may also use the .ddl file extension. Even harmful programs can create .ddl files. Be especially cautious with .ddl files coming from an unknown source!

Can't open a .ddl file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .ddl file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

cdl, dcl, dd, ddi, ddm, ddo, ddp, del, dfl, dl, dld, drl, dsl, dvl, dwl

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

CR10X EdLog Compiled Program
CyberLink PowerDVD Data
DDwin Project
Web Services Description Language Document
Delphi Diagram Portfolio
Diskdupe Disk Image

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.


If you have useful information about the .ddl file format, then write to us!

DataTypes.net >> DDL file