---
name: "Tangram::Driver::mysql"
section: "3pm"
platform: "linux"
package: "libtangram-perl"
version: "2.12-4"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Tangram::Driver::mysql"
---

# Tangram::Driver::mysql(3pm)

Orthogonal Object Persistence in Mysql databases

## NAME

Tangram::Driver::mysql - Orthogonal Object Persistence in Mysql databases

## SYNOPSIS

```
   use Tangram;
   use Tangram::Driver::mysql;
   $schema = Tangram::Driver::mysql->schema( $hashref );
   Tangram::Driver::mysql->deploy($schema, $dbh);

   $storage = Tangram::Driver::mysql->connect( $schema,
      $data_source, $username, $password );
   $storage->disconnect();
   Tangram::Driver::mysql->retreat($schema, $dbh);
```

## DESCRIPTION

This is the entry point in the mysql-specific object-relational persistence backend.

This backend makes use of Mysql extensions SELECT GET\_LOCK, SELECT RELEASE\_LOCK and LAST\_INSERT\_ID to safely allocate object ids in the absence of transactions.

The vanilla Relational backend may not be used with Mysql databases in multiprogramming context.

## METHODS

This backend does not add any methods; for a description of available methods, see Tangram::Relational.