| author | Dominic Pinkman <Dominic.Pinkman@Nokia.com> |
| Thu, 21 Jan 2010 18:18:20 +0000 | |
| changeset 0 | 89d6a7a84779 |
| permissions | -rw-r--r-- |
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89d6a7a84779
Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
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<?xml version="1.0" encoding="utf-8"?> |
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89d6a7a84779
Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. --> |
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89d6a7a84779
Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
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<!-- This component and the accompanying materials are made available under the terms of the License |
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89d6a7a84779
Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
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"Eclipse Public License v1.0" which accompanies this distribution, |
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89d6a7a84779
Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff
changeset
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". --> |
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89d6a7a84779
Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff
changeset
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<!-- Initial Contributors: |
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89d6a7a84779
Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff
changeset
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Nokia Corporation - initial contribution. |
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89d6a7a84779
Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff
changeset
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Contributors: |
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89d6a7a84779
Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff
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--> |
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89d6a7a84779
Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff
changeset
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<!DOCTYPE concept |
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89d6a7a84779
Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
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PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd"> |
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89d6a7a84779
Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents:
diff
changeset
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<concept xml:lang="en" id="GUID-7BE83158-B818-57E4-9A8C-43E5D2C84687"><title>DBMS columns, column sets, and keys overview</title><prolog><metadata><keywords/></metadata></prolog><conbody><section><title>Purpose</title> <p>Defines column, column set, and index key structures.</p> </section> <section><title>Description</title> <p>The API has three key concepts: column, column set, and index key. </p> <p><b>Column</b> </p> <p>A table in a database is defined by a set of columns. Each column has attributes such as a name, a type, and a maximum length (if text or binary). </p> <p>A column definition is encapsulated by <xref href="GUID-0130C7AA-B143-32A4-BB33-0D90CEDABAAE.dita"><apiname>TDbCol</apiname></xref>. </p> <p><b>Column set</b> </p> <p>A set of columns that describe a table are encapsulated in <xref href="GUID-9B02D75E-1EE0-349E-9900-BEC1CAF9DECE.dita"><apiname>CDbColSet</apiname></xref>. The set can be iterated over using <xref href="GUID-C76AA489-BFF5-3D6E-BB26-C84A3E7887ED.dita"><apiname>TDbColSetIter</apiname></xref>.</p> <p><b>Index key</b> </p> <p>An index key orders one or more table columns (keys). It has attributes such as being unique or primary, a comparison specification for text columns, and a list of columns which make up the key. </p> <p>The index key is encapsulated in <xref href="GUID-0CA88018-0265-3853-AC64-3B938DD0F60C.dita"><apiname>CDbKey</apiname></xref>. A column for the key is encapsulated in <xref href="GUID-DDB34DBF-4A96-3430-820A-97AB5585962D.dita"><apiname>TDbKeyCol</apiname></xref>.</p> </section> </conbody></concept> |