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 is just below. The
original source file can be found amongst the examples in the repository.
$ 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-0.2.1.0.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 |
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Change log | changelog.md |
Dependencies | base (>=4.5 && <5), bytestring (>=0.10 && <0.11), containers (>=0.5.11.0), directory (>=1.3.1.5), filepath (>=1.4.2), gitrev (>=1.3.1), graphviz (>=2999.20 && <2999.21), parsec (>=3.1 && <3.2), raw-strings-qq (>=1.1), text (>=1 && <2), yaml (>=0.8.32) [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 mmzx at 2020-02-02T11:59:04Z |
Distributions | |
Reverse Dependencies | 1 direct, 0 indirect [details] |
Executables | erd |
Downloads | 6938 total (16 in the last 30 days) |
Rating | (no votes yet) [estimated by Bayesian average] |
Your Rating | |
Status | Docs not available [build log] Last success reported on 2020-02-02 [all 3 reports] |