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| author | nhauge | 2008-05-22 15:43:42 +0000 |
|---|---|---|
| committer | nhauge | 2008-05-22 15:43:42 +0000 |
| commit | f8afeae1e7e8d0c3f63887e84a366b91e5e674ae (patch) | |
| tree | 5443f0f4a4b2f74cf05e3e2efe839dc94f282505 /jpa/plugins/org.eclipse.jpt.doc.user/concept_mapping.htm | |
| parent | 9e6d53b0be6215d37fe1d4cee8a00fb3a21f6646 (diff) | |
| download | webtools.dali-f8afeae1e7e8d0c3f63887e84a366b91e5e674ae.tar.gz webtools.dali-f8afeae1e7e8d0c3f63887e84a366b91e5e674ae.tar.xz webtools.dali-f8afeae1e7e8d0c3f63887e84a366b91e5e674ae.zip | |
232870 - Documentation updates for 2.0.
Diffstat (limited to 'jpa/plugins/org.eclipse.jpt.doc.user/concept_mapping.htm')
| -rw-r--r-- | jpa/plugins/org.eclipse.jpt.doc.user/concept_mapping.htm | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.doc.user/concept_mapping.htm b/jpa/plugins/org.eclipse.jpt.doc.user/concept_mapping.htm index 593f1bdb15..afceadbea0 100644 --- a/jpa/plugins/org.eclipse.jpt.doc.user/concept_mapping.htm +++ b/jpa/plugins/org.eclipse.jpt.doc.user/concept_mapping.htm @@ -2,18 +2,18 @@ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> -<!-- Run date = January 22, 2008 9:11:15 --> -<meta name="OAC_IGNORE_SKIP_NAV" content="true" /> +<!-- Run date = May 21, 2008 14:42:02 --> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii" /> <title>Understanding OR mappings</title> + <meta http-equiv="Content-Style-Type" content="text/css" /> <meta http-equiv="Content-Script-Type" content="text/javascript" /> <meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.0" /> <meta name="date" content="2005-07-10T12:57:20+08:00" /> <meta name="robots" content="noarchive" /> <meta name="doctitle" content="Understanding OR mappings" /> -<meta name="relnum" content="M5 - Release 2.0.0" /> -<meta name="partnum" content="" /> +<meta name="relnum" content="Release 2.0" /> +<meta name="copyright" content="Copyright (c) 2000, 2008 oracle . All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at http://www.eclipse.org/legal/epl-v10.html. Contributors: Oracle - initial API and implementation" /> <link rel="copyright" href="dcommon/html/cpyr.htm" title="Copyright" type="text/html" /> <link rel="stylesheet" href="dcommon/css/blafdoc.css" title="Oracle BLAFDoc" type="text/css" /> <link rel="start" href="../../index.htm" title="Home" type="text/html" /> @@ -23,7 +23,7 @@ <p><a id="BABBDJFI" name="BABBDJFI"></a></p> <div class="sect1"> <h1>Understanding OR mappings</h1> -<p><a id="sthref44" name="sthref44"></a><a id="sthref45" name="sthref45"></a>The Dali OR (object-relational) Mapping Tool allows you to describe how your entity objects <span class="italic">map</span> to the data source (or other objects). This approach isolates persistence information from the object model–developers are free to design their ideal object model, and DBAs are free to design their ideal schema.</p> +<p><a id="sthref18" name="sthref18"></a><a id="sthref19" name="sthref19"></a>The Dali OR (object-relational) Mapping Tool allows you to describe how your entity objects <span class="italic">map</span> to the data source (or other objects). This approach isolates persistence information from the object model–developers are free to design their ideal object model, and DBAs are free to design their ideal schema.</p> <p>These mappings transform an object data member type to a corresponding relational database data source representation. These OR mappings can also transform object data members that reference other domain objects stored in other tables in the database and are related through foreign keys.</p> <p>You can use these mappings to map simple data types including primitives (such as <code>int</code>), JDK classes (such as <code>String</code>), and large object (LOB) values. You can also use them to transform object data members that reference other domain objects by way of association where data source representations require object identity maintenance (such as sequencing and back references) and possess various types of multiplicity and navigability. The appropriate mapping class is chosen primarily by the cardinality of the relationship.</p> <img src="img/ngrelt.png" alt="Related task" title="Related task" /><br /> |