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href="group__dbo.html">Database Objects (Wt::Dbo)</a></div></div> </div> </div> <div class="contents"> <!-- doxytag: class="Wt::Dbo::ForeignKeyConstraint" --> <p>Type that indicates one or more foreign key constraints. <a href="classWt_1_1Dbo_1_1ForeignKeyConstraint.html#details">More...</a></p> <p><a href="classWt_1_1Dbo_1_1ForeignKeyConstraint-members.html">List of all members.</a></p> <hr/><a name="details" id="details"></a><h2>Detailed Description</h2> <div class="textblock"><p>Type that indicates one or more foreign key constraints. </p> <p>This type behaves like an <code>enum</code> but avoid ambiguous overloading problems.</p> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="group__dbo.html#ga538d2126ffe7787d14e72bfcdb266ff0">NotNull</a> </dd> <dd> <a class="el" href="group__dbo.html#ga766c0992c040bee5b9b1f4dcfa18d11f">OnUpdateCascade</a>, <a class="el" href="group__dbo.html#ga5d603e49ff5ce63182c5e5d07f08fb21">OnUpdateSetNull</a> </dd> <dd> <a class="el" href="group__dbo.html#gaf873ff817052bf26092f89ab7cf9866f">OnDeleteCascade</a> <a class="el" href="group__dbo.html#gaed6ad23f771e2c07db12249e1f6af390">OnDeleteSetNull</a></dd> <dd> <a class="el" href="group__dbo.html#gaa3de862f9544c4d30b8cbcac4b50feba" title="Maps the "One"-side (foreign key) of a ManyToOne or OneToOne relation.">belongsTo()</a>, <a class="el" href="group__dbo.html#ga570b71f937c991b000b9db01b327a363" title="Maps the "Many"-side of a ManyToOne or ManyToMany relation.">hasMany()</a> </dd></dl> </div></div> <!-- window showing the filter options --> <div id="MSearchSelectWindow" onmouseover="return searchBox.OnSearchSelectShow()" onmouseout="return searchBox.OnSearchSelectHide()" onkeydown="return searchBox.OnSearchSelectKey(event)"> <a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span 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