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    This gives you the following advantages: w No distributing, installing and configuring the BDE.

    You can use any 32 bits Delphi or C Builder version to develop Client/Server applications w No BDE overhead or tradeoffs: your queries will run up to five times faster w Automatic Master/Detail configuration w Automatically enforce server-constraints on the client w Make use of server generated values (defaults, trigger modified columns) w Query By Example mode for high performance queryable forms without any programming w Use PL/SQL blocks for server logic in your application w Increase batch performance with Array DML or Direct Path Loading w Easily execute SQL scripts similar to SQL*Plus through the TOracle Script component w Monitor database access information with the Oracle Monitor utility w Access your stored packages easily through the TOracle Package component or the Package Wizard w Encapsulation of standard Oracle packages (dbms_alert, dbms_job, utl_file, ...) w Many Oracle specific features supported w Compatible with SQL*Net 1 thru Oracle Net 9, and with Personal Oracle Lite thru Oracle9i Component overview Direct Oracle Access consists of the following components: w You use the TOracle Session component to connect to an Oracle database and to control transactions.

    Not all of them are great examples/code but they are present.260 TOracle Provider reference.............................................................................................. 261 Unit reference................................................................................................................ 262 Direct Oracle Access Preferences ................................................................................... 266 Direct Oracle Access Designtime Property Defaults..........................................................268 Multi-threaded applications ............................................................................................. 269 Dynamic Link Libraries ................................................................................................... 270 Translating standard messages from English................................................................... 272 Oracle Net compatibility issues ....................................................................................... 274 Personal Oracle Lite compatibility issues .........................................................................SELECT文で取得したデータを更新するために、Oracleはテーブルのキー、特にユニークキーを必要とします。 Oracleは全てのテーブルで使えるユニークキーとして ROWIDを用意するため、TOracle Data Setは、データセットを更新するために、テーブルの ROWIDを使うように設計されています。 よって、SQLプロパティのSELECT文に、テーブルのROWIDを含めることが、データセットを更新可能にするために必要です。ROWIDがクエリに含まれない場合データセットはリードオンリーになってしまいます。なお、SELECT対象がリードオンリーのビューであるなど、ROWIDを使用した更新が不可能な場合にも、On Apply Recordイベントを記述することで対応が可能です(後述)。 ROWIDをクエリに含めさえすれば、BDEのTQueryと同じように以下のメンバを用いてデータを操作できます。 //Oracle Data Set.SQL = SELECT ROWID, ENAME FROM EMP procedure TForm1.

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