105 lines
7.1 KiB
HTML
105 lines
7.1 KiB
HTML
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<title>SQL objects</title>
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</head>
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<body id="rbafysqlobjects"><a name="rbafysqlobjects"><!-- --></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">SQL objects</h1>
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<div><p>SQL <dfn class="term">objects</dfn> are schemas, journals, catalogs,
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tables, aliases, views, indexes, constraints, triggers, sequences, stored
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procedures, user-defined functions, user-defined types, and SQL packages.
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SQL creates and maintains these objects as system objects.</p>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rbafyconschema.htm">Schemas</a></strong><br />
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A <dfn class="term">schema</dfn> provides a logical grouping
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of SQL objects.</li>
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<li class="ulchildlink"><strong><a href="rbafyconjournal.htm">Journals and journal receivers</a></strong><br />
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A <dfn class="term">journal</dfn> and <dfn class="term">journal receiver</dfn> are
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used to record changes to tables and views in the database.</li>
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<li class="ulchildlink"><strong><a href="rbafyconcatalogs.htm">Catalogs</a></strong><br />
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An SQL <dfn class="term">catalog</dfn> consists of a set of tables
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and views which describe tables, views, indexes, packages, procedures, functions,
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files, sequences, triggers, and constraints.</li>
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<li class="ulchildlink"><strong><a href="rbafycontables.htm">Tables, rows, and columns</a></strong><br />
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A <dfn class="term">table</dfn> is a two-dimensional arrangement of data consisting
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of <dfn class="term">rows</dfn> and <dfn class="term">columns</dfn>.</li>
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<li class="ulchildlink"><strong><a href="rbafyaliasdef.htm">Aliases</a></strong><br />
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An <dfn class="term">alias</dfn> is an alternate name for a table or view.</li>
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<li class="ulchildlink"><strong><a href="rbafyviewex.htm">Views</a></strong><br />
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A <dfn class="term">view</dfn> appears like a table to an application
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program; however, a view contains no data.</li>
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<li class="ulchildlink"><strong><a href="rbafyindexex.htm">Indexes</a></strong><br />
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An SQL <dfn class="term">index</dfn> is a subset of the data
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in the columns of a table that are logically arranged in either ascending
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or descending order.</li>
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<li class="ulchildlink"><strong><a href="rbafyconstex.htm">Constraints</a></strong><br />
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<dfn class="term">Constraints</dfn> are rules enforced by the database manager.</li>
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<li class="ulchildlink"><strong><a href="rbafytrigger1.htm">Triggers</a></strong><br />
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A <dfn class="term">trigger</dfn> is a set of actions that are run automatically
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whenever a specified event occurs to a specified base table or view.</li>
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<li class="ulchildlink"><strong><a href="rbafystored1.htm">Stored procedures</a></strong><br />
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A <dfn class="term">stored procedure</dfn> is a program that can be called
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using the SQL CALL statement.</li>
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<li class="ulchildlink"><strong><a href="rbafy1sequence.htm">Sequences</a></strong><br />
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A <dfn class="term">sequence</dfn> is a data area object that provides a quick
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and easy way of generating unique numbers.</li>
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<li class="ulchildlink"><strong><a href="rbafyusrdeffun.htm">User-defined functions</a></strong><br />
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<span>A <dfn class="term">user-defined function</dfn> is
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a program that can be called like any built-in function. </span></li>
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<li class="ulchildlink"><strong><a href="rbafyusrdeftype.htm">User-defined types</a></strong><br />
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A <dfn class="term">user-defined type</dfn> is a distinct data
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type that users can define independently of those supplied by the database
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management system.</li>
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<li class="ulchildlink"><strong><a href="rbafypack1.htm">SQL packages</a></strong><br />
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An <dfn class="term">SQL package</dfn> is an object that contains the control
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structure produced when the SQL statements in an application program are bound
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to a remote relational database management system (DBMS).</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rbafyintro.htm" title="These topics describe the iSeries server implementation of the Structured Query Language (SQL) using DB2 UDB for iSeries and the DB2 UDB Query Manager and SQL Development Kit licensed program.">Introduction to DB2 UDB for iSeries Structured Query Language</a></div>
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</div>
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</div>
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</body>
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