Getting and Installing BDB SQL
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## Getting and Installing BDB SQL

The BDB SQL interface comes as a part of the Oracle Berkeley DB download. This can be downloaded from the Oracle Berkeley DB download page.

How you install the BDB SQL interface differs depending on whether you are using a Unix or a Windows system.

### On Windows Systems

The BDB SQL interface is automatically built and installed whenever you build or install Berkeley DB for a Windows system. The BDB SQL interface `dll`s and the command line interpreter have names that differ from a standard SQLite distribution as follows:

- `dbsql.exe`

  This is the command line shell. It operates identically to the SQLite sqlite3.exe shell.

- `libdb_sql50.dll`

  This is the library that provides the BDB SQL interface. It is the equivalent of the SQLite `sqlite3.dll` library.

### On Unix

In order to build the BDB SQL interface, you download and build Berkeley DB, configuring it so that the BDB SQL interface is also built. Be aware that it is not built by default. Instead, you need to tell the Berkeley DB `configure` script to also build the BDB SQL interface. For instructions on building the BDB SQL interface, see Building the DB SQL Interface in the Berkeley DB Installation and Build Guide.

The library and application names used when building the BDB SQL interface are different than those used by SQLite. If you want library and command shell names that are consistent with the names used by SQLite, configure the BDB SQL interface build using the compatibility (`--enable-sql_compat`) option.

### Warning

The compatibility option can break other applications on your platform that rely on standard SQLite. This is especially true of Mac OS X, which uses standard SQLite for a number of default applications.

Use the compatibility option only if you know exactly what you are doing.

Unless you built the BDB SQL interface with the compatibility option, libraries and a command line shell are built with the following names:

- dbsql

  This is the command line shell. It operates identically to the SQLite sqlite3 shell.

- `libdb_sql`

  This is the library that provides the BDB SQL interface. It is the equivalent of the SQLite `libsqlite3` library.

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