65 lines
4.7 KiB
HTML
65 lines
4.7 KiB
HTML
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Database data protection and monitoring" />
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<meta name="abstract" content="The system provides features to improve the integrity and consistency of your data. Two ways to protect data are enforcing business rules and enforcing data type rules." />
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<title>Database data protection and monitoring</title>
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<body id="rbaforitgint"><a name="rbaforitgint"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Database data protection and monitoring</h1>
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<div><p>The system provides features to improve the integrity and consistency
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of your data. Two ways to protect data are enforcing business rules and enforcing
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data type rules.</p>
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<div class="p">You can enforce business rules using the following methods: <ul><li>Referential constraints let you put controls (constraints) on data in
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files you define as having a mutual dependency. A referential constraint lets
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you specify rules to be followed when changes are made to files with constraints. </li>
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<li>Triggers let you run your own program to take any action or evaluate changes
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when files are changed. When predefined changes are made or attempted, a trigger
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program is run. </li>
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</ul>
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</div>
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<p>The system performs data type checking in certain instances to ensure,
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for example, that data in a numeric field is really numeric.</p>
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<div class="p">In addition, the system protects data from loss using the following methods: <ul><li>Journaling and commitment control functions</li>
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<li>System-managed access path protection (SMAPP) support</li>
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</ul>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rbafodbfcon.htm" title="These topics provide some of the basic database concepts for setting up or working with IBM i5/OS database files.">Database file concepts</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rbaforzahfrca.htm" title="These topics discuss how to use referential constraints in your database to ensure that it contains only valid data.">Ensure data integrity with referential constraints</a></div>
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<div><a href="rbaforzahftra.htm" title="A trigger is a set of actions that run automatically when a specified change or read operation is performed on a specified database file. On iSeries, you define a set of trigger actions in any supported high-level language.">Trigger automatic events in your database</a></div>
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<div><a href="rbaforzahfpra.htm" title="These topics discuss the iSeries functions of recovering or restoring your database after the system loses data.">Recover and restore your database</a></div>
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</div>
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</div>
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