Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Sounds like if <a href="https://stackoverflow.com/questions/6651330/oracle-database-connection-in-delphi-5/6652359#6652359">you posted two times the (almost) same question</a>... with more focus on ADO this time.</p> <p>As was written in the previous question, if you attempt to connect to an Oracle database using ADO or OleDB, you'll find out that all OleDB providers are buggy for handling Oracle BLOBs: Microsoft's version just do not handle them, and Oracle's version will <a href="https://stackoverflow.com/questions/6147274/is-oraoledb-provider-in-net-unreliable-on-clob-fields">randomly return null for 1/4 of rows</a>... So IMHO ADO or OleDB are not a serious option for accessing Oracle database. :(</p> <p>And if your purpose is to get rid of the BDE installation, you'll find out that the Oracle's OleDB provider is quite huge and that the BDE is much light and better... A standard Oracle's client installation containing the OleDB/ADO provider (which is not installed in the "Light" version of the Oracle's clients), needs a .zip setup of about 660 MB...</p> <p>On real database data, I found out our <a href="http://blog.synopse.info/post/2011/07/09/SynDBOracle:-Open-Source-native-Oracle-access" rel="nofollow noreferrer">Open Source direct access to Oracle</a> to be 2 to 10 times faster than the OleDB provider, without the need to install this provider (nor the BDE). You can even use the <a href="http://www.oracle.com/technetwork/database/features/instant-client" rel="nofollow noreferrer">Oracle Instant Client</a> provided by Oracle which allows you to run your applications without installing the standard (huge) Oracle client or having an ORACLE_HOME. Just deliver the dll files in the same directory than your application, and it will work.</p> <p>Of course, this is full Open Source, and works from Delphi 5 up to XE. So when your project may upgrade to a newer Delphi version, it will work. You are not tied to <a href="http://www.torry.net/pages.php?id=549" rel="nofollow noreferrer">non-Unicode Delphi 5-Delphi 7 version of Oracle components, as you can found on Torry's</a>, e.g. but those components may help you get rid of the BDE installation for an existing project. </p> <p>If you don't use BLOBs in your database, you can use ADO. In this case, my advice is to <a href="https://stackoverflow.com/questions/2948274/delphi-ado-which-components-tadodataset-and-tadocommand-or-tadoquery">read this post</a>, and use <code>TADODataset</code>, which is available in Delphi 5.</p>
    singulars
    1. This table or related slice is empty.
    1. POADO components in delphi
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USCommunity
    1. USArnaud Bouchez
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTModeratorReview
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. CO-1 IMO this appears to be mostly an advertisment/PR post, not an answer to the question, which was already very well answered by RRUZ.
      singulars
      1. PO
      1. USVector
    2. CO@Mikey I just wanted to show how this solution worked out, and provide another solution than ADO, which is buggy on Oracle. I've deleted the screenshot and source code sample - hope it will look more "neutral". There was a link to other components at Torry's: so it's NOT a PR post. IMHO this answer is still more precise and complete than RRUZ: e.g. the OP question is about replacing the BDE with ADO/OleDB, and RRUZ didn't speak about the (huge) size of the OleDB Provider installation.
      singulars
      1. PO
      1. USArnaud Bouchez
    3. CO@AB- The OP didn't voice any concerns about the size of ado, nor did the OP show any interest in other solutions
      singulars
      1. PO
      1. USVector
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload