erd: An entity-relationship diagram generator from a plain text description.
erd transforms a plain text description of a relational database schema to a graphical representation of that schema. It is intended that the graph make use of common conventions when depicting entity-relationship diagrams, including modeling the cardinality of relationships between entities.
A quick example that transforms an er
file to a PDF:
$ curl 'https://raw.github.com/BurntSushi/erd/master/examples/simple.er' > simple.er $ cat simple.er # Entities are declared in '[' ... ']'. All attributes after the entity header # up until the end of the file (or the next entity declaration) correspond # to this entity. [Person] *name height weight +birth_location_id [Location] *id city state country # Each relationship must be between exactly two entities, which need not # be distinct. Each entity in the relationship has exactly one of four # possible cardinalities: # # Cardinality Syntax # 0 or 1 0 # exactly 1 1 # 0 or more * # 1 or more + Person *--1 Location $ erd -i simple.er -o simple.pdf
The PDF should now contain a graph that looks like this:
See the README.md file for more examples and instructions on how to write ER files.
Downloads
- erd-0.1.2.0.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)
Maintainer's Corner
For package maintainers and hackage trustees
Candidates
Versions [RSS] | 0.1.0.0, 0.1.1.0, 0.1.2.0, 0.1.3.0, 0.2.0.0, 0.2.1.0 |
---|---|
Dependencies | base (>=4.6 && <4.7), bytestring (>=0.10 && <0.11), containers (>=0.5 && <0.6), graphviz (>=2999.16 && <2999.17), parsec (>=3.1 && <3.2), text (>=0.11 && <0.12) [details] |
License | LicenseRef-PublicDomain |
Author | Andrew Gallant |
Maintainer | jamslam@gmail.com |
Category | Database, Development |
Home page | https://github.com/BurntSushi/erd |
Source repo | head: git clone git://github.com/BurntSushi/erd.git |
Uploaded | by burntsushi at 2014-01-16T04:47:15Z |
Distributions | |
Reverse Dependencies | 1 direct, 0 indirect [details] |
Executables | erd |
Downloads | 6938 total (15 in the last 30 days) |
Rating | (no votes yet) [estimated by Bayesian average] |
Your Rating | |
Status | Docs not available [build log] Successful builds reported [all 7 reports] |