haskell-relational-record/index.md

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title: Project top page
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### What is HRR?

Haskell Relational Record (HRR) is a query generator based on typed relational algebra and a mapper between SQL value lists and Haskell record types.

- Abstracted - relations are expressed as high level expressions and they are translated into SQL statements. Drivers are provided for DB2, ProsgreSQL, SQLite, MySQL, MicroSoft SQL Server and OracleSQL.
- Type safe - SQL statements produced by HRR are guaranteed to be valid if the Haskell code compiles. Even the type of placeholders are propagated.
- Composable - relations can be composed to build bigger relations.
- Automatic - SQL schema is obtained from a target DB and Haskell types are automatically generated at compile time.

### Documentations

- [Quick start](quickstart.html)
- [Tutorial](tutorial.html)
- [Examples](examples.html)
- [Manual](http://hackage.haskell.org/package/relational-record/docs/Database-Relational-Query-Documentation.html)
- [Technical information](techinfo.html)

### Questions

If you have any questions and/or suggestions, please submit [github issues](https://github.com/khibino/haskell-relational-record/issues).

### Authors and contributors

- [Kei Hibino](https://github.com/khibino), [Shohei Murayama](https://github.com/yuga), [Shohei Yasutake](https://github.com/amutake), [Sho Kuroda](https://github.com/krdlab) and [Kazu Yamamoto](https://github.com/kazu-yamamoto)
top page. 2014-12-11 10:25:41 +03:00			`---`
			`layout: default`
			`title: Project top page`
			`---`

			`### What is HRR?`

Fix english to make it sound more natural. 2015-03-11 11:12:26 +03:00			`Haskell Relational Record (HRR) is a query generator based on typed relational algebra and a mapper between SQL value lists and Haskell record types.`
update. 2014-12-11 15:45:00 +03:00
Fix english to make it sound more natural. 2015-03-11 11:12:26 +03:00			`- Abstracted - relations are expressed as high level expressions and they are translated into SQL statements. Drivers are provided for DB2, ProsgreSQL, SQLite, MySQL, MicroSoft SQL Server and OracleSQL.`
better wordings. 2015-04-24 05:54:56 +03:00			`- Type safe - SQL statements produced by HRR are guaranteed to be valid if the Haskell code compiles. Even the type of placeholders are propagated.`
Fix english to make it sound more natural. 2015-03-11 11:12:26 +03:00			`- Composable - relations can be composed to build bigger relations.`
			`- Automatic - SQL schema is obtained from a target DB and Haskell types are automatically generated at compile time.`
top page. 2014-12-11 10:25:41 +03:00
			`### Documentations`

			`- [Quick start](quickstart.html)`
minor changes. 2014-12-12 09:08:00 +03:00			`- [Tutorial](tutorial.html)`
contributors. 2014-12-12 09:24:50 +03:00			`- [Examples](examples.html)`
link. 2014-12-12 09:47:15 +03:00			`- [Manual](http://hackage.haskell.org/package/relational-record/docs/Database-Relational-Query-Documentation.html)`
creating technical info. 2014-12-26 16:02:05 +03:00			`- [Technical information](techinfo.html)`
top page. 2014-12-11 10:25:41 +03:00
questions. 2015-01-08 05:15:01 +03:00			`### Questions`

Fix english to make it sound more natural. 2015-03-11 11:12:26 +03:00			`If you have any questions and/or suggestions, please submit [github issues](https://github.com/khibino/haskell-relational-record/issues).`
update. 2015-01-08 05:16:07 +03:00
			`### Authors and contributors`

			`- [Kei Hibino](https://github.com/khibino), [Shohei Murayama](https://github.com/yuga), [Shohei Yasutake](https://github.com/amutake), [Sho Kuroda](https://github.com/krdlab) and [Kazu Yamamoto](https://github.com/kazu-yamamoto)`