# GNU Ferret

> data modeling tool

**Wikidata**: [Q4039164](https://www.wikidata.org/wiki/Q4039164)  
**Source**: https://4ort.xyz/entity/gnu-ferret

## Summary
GNU Ferret is a data modeling tool developed by the GNU Project. It is designed to create data models for information systems, with a specific application toward entity-relationship models. The software is part of the free software movement and is licensed under the GNU Lesser General Public License.

## Key Facts
- **Classification:** GNU Ferret is an official GNU package and a data modeling tool.
- **License:** The software is released under the GNU Lesser General Public License (LGPL).
- **Developer:** It is developed and maintained by the GNU Project.
- **Domain:** It specifically applies to the entity-relationship model within the field of software engineering.
- **Website:** The official homepage is located at `http://gnu.org/software/ferret/`.
- **Software Movement:** It is a component of the free software movement.
- **Package Availability:** A stable package is available for Debian systems under the name "ferret."
- **Community:** Support and discussion are accessible via the IRC channel `irc://irc.freenode.net/ferret`.

## FAQs
### Q: What is the primary function of GNU Ferret?
A: GNU Ferret is used for data modeling, a process in software engineering used to create data models for information systems. It specifically supports the creation of entity-relationship models.

### Q: Under what license is GNU Ferret distributed?
A: GNU Ferret is distributed as free software under the GNU Lesser General Public License (LGPL).

### Q: Is GNU Ferret officially recognized by the GNU Project?
A: Yes, GNU Ferret is classified as an "instance of" a GNU package, meaning it is an official part of the GNU operating system project.

## Why It Matters
GNU Ferret plays a specific role in the software engineering ecosystem by providing a free, libre solution for the critical development phase of data modeling. In software engineering, data modeling is the formal process of creating a data model for an information system; this step is essential for defining how data is stored, organized, and manipulated. By offering a tool dedicated to this process, GNU Ferret allows developers and architects to design robust information systems without relying on proprietary software.

Its significance is further underscored by its status as a GNU package. This means it adheres to the philosophy of the free software movement, ensuring users have the freedom to study, modify, and distribute the software. The tool's specific focus on the entity-relationship model makes it a relevant utility for database design and system architecture where data relationships must be strictly defined. Its availability in the Debian stable repositories also highlights its integration into the broader open-source ecosystem, making it readily accessible for practical use in Linux environments.

## Notable For
- **GNU Integration:** Distinguished as an official GNU package, separating it from non-GNU open-source tools.
- **Licensing:** Utilizes the Lesser GPL (LGPL), allowing for more flexible linking with non-free software compared to the standard GPL.
- **Specialized Focus:** Specifically applies to entity-relationship modeling, a standard technique in database design.
- **Accessibility:** Integrated into the Debian package management system ("debian_stable_package: ferret"), facilitating easy installation for Linux users.

## Body

### Development and Status
GNU Ferret is actively maintained as a part of the GNU Project. While the software is copyrighted, it is released under the GNU Lesser General Public License, which permits its use in both free and proprietary software contexts under specific conditions. The project aligns with the broader objectives of the free software movement.

### Technical Functionality
As a data modeling tool, GNU Ferret facilitates the process of creating abstract models that describe how data is organized and used. Its primary application is the **entity-relationship model**, a standard for representing data in terms of entities and the relationships between them. This classification places it firmly within the domain of software engineering tools used for system architecture and database design.

### Availability and Resources
The software is accessible via its official website hosted by GNU. For users of Debian and Debian-based Linux distributions, the software is available directly through the package manager as "ferret." Historical and directory data regarding the software can be found in the Free Software Directory and on Pro-Linux.de (ID: 18438). Real-time community support is available via the Freenode IRC network at `irc://irc.freenode.net/ferret`.