---
name: "Tangram::mysql"
section: "3pm"
platform: "linux"
package: "libtangram-perl"
version: "2.07-1"
release: "Debian 3.1 (Sarge)"
platforms: ["linux"]
url: "https://new.carta.tech/Tangram::mysql"
---

# Tangram::mysql(3pm)

Orthogonal Object Persistence in Mysql databases

## NAME

Tangram::mysql - Orthogonal Object Persistence in Mysql databases

## SYNOPSIS

```
   use Tangram;
   use Tangram::mysql;
```

```
   $schema = Tangram::mysql->schema( $hashref );
```

```
   Tangram::mysql->deploy($schema, $dbh);
```

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

```
   $storage->disconnect();
```

```
   Tangram::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.