Extract text from Data dictionary models (DDM)
To convert DDM Models to another format, you need ERwin Data Modeler or other Database software.
To convert other file formats to the "Data Dictionary Model" file type, you need software like ERwin Data Modeler or a similar tool.
The .DDM file extension primarily acts as a Data Dictionary Model file generated by ERwin Data Modeler. It stores structured metadata, database schema definitions, and entity-relationship diagrams used by enterprise data architects. Other software systems also output .DDM files, including Dynamic Designer (which uses it as a model file that sometimes wraps standard JFIF image data), MIKE by DHI (for complex hydraulic and hydrological modeling data), and Alpha Five (as a Data Dictionary Memo file).
The main disadvantage of the .DDM format is its highly proprietary nature. These files are functionally useless without the expensive, specialized enterprise software that originally authored them. You cannot natively preview .DDM files in web browsers or standard text editors. Consequently, users frequently need to convert .DDM files into universally accessible formats like SQL to execute schema generations, CSV for tabular metadata review, or XML to integrate with third-party modeling platforms.
Standard online converters generally fail to process .DDM because it is a closed, undocumented format. Often, only the original application can properly read or export the structured data. However, convert.guru offers a pragmatic workaround. Just drag and drop your file to see what it is and convert it if supported. Our analyzer inspects the binary signature of your file; if we detect a supported underlying or embedded format (such as an embedded JPG inside a Dynamic Designer file), viewing or conversion may still be possible.
Convert.Guru analyzes your DDM file, detects the exact format, and lets you read the text inside.
Users also converted SN4, SN1 and SN2 files.
If you want to convert DDM file to , you can use ERwin Data Modeler or similar software from the "Database Schema Modeling" category. In the File menu, look for Save As… or Export….
To convert files to DDM, try ERwin Data Modeler or another comparable tool in the "Database Schema Modeling" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our DDM converter.