Lazarus DB Faq/ja

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日本語版メニュー
メインページ - Lazarus Documentation日本語版 - 翻訳ノート - 日本語障害情報

General

このFAQはLazarusでのデータベースプログラミングに関するものです。

どうしたら、もっと他のFAQを見つけられますか?

オフィシャルWebサイトwww.lazarus.freepascal.org.を見てください。(こちら

どうしたら、データベースコンポーネントを見つけられますか?

現在、SQLdbコンポーネントはLazarusのパッケージになっていますので、インストールさえすればよいです。 [$LazarusDir]/componentsフォルダをみると、SQLdbのサブディレクトリがあるでしょう。sqldblaz.lpkをインストールすると、MySQL,Interbase/Firebird, PostgresのDBサーバへ接続することができます。

ここにパッケージインストールのヘルプがあります。

Are there other components?

Yes. The ZEOS components have been ported to Lazarus as well.
You have to download ZEOSDBO_Rework from ZEOS cvs.
See also this tutorial for Zeos.
Pascal Data Objects works equally with Delphi and FPC 2.0

IB / FB

How do I connect from Linux to a Windows server

Entering the correct path to a database on a Windows server from a Linux client is not very clear.

Say you have installed firebird in F:\Program Files\firebird\. The employee.fdb example database will then be installed in the directory F:\Program Files\firebird\examples\ . The IP-adress of your computer is 192.168.2.100.

Then entering the following databasename

192.168.2.100:F:\Program Files\firebird\examples\employee.fdb

in your IBConnection will connect to the required database.

Note that you don't have to enter a value for the hostname property!

MySQL

Which version of mySQL is supported?

Currently MySQL 4.0, MySQL 4.1 and MySQL 5.0 are supported by de SQLdb components. Make sure you are using the correct connection component for your client library version. So if you have the client libraries installed for MySQL 4.1 then you have to use TMySQL41Connection component, even if the server is running version 4.0 or 5.0.

Pascal Data Objects

There is now an alternative. The functions introduced with MySQL 4.1 and 5.0 like prepared statements, binding, and stored procedures are supported by database API called Pascal Data Objects, which is inspired by PHP Data Objects. All the code and documentation necessary to use this new API is available on a Trac wiki:

https://trac.synsport.com:8000/index.php/pdo/wiki (username/password is guest/guest)

PostgreSQL

You can connect to PostgreSQL db by TPQConnection component. This component uses the PostgreSQL's libpq connection library[1], so you can easily connect almost every PostgreSQL db, but the component doesn't support the following connection options:

  • Port
  • ClientEncoding

Maybe there are other unsupported connection parameters.

--Jrmarino 11:28, 13 Mar 2006 (CET)