Databases
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    <p>If you take a look at the tool tip in IB you'll see that the option you refer to</p> <pre><code>- (BOOL)allowsColumnReordering </code></pre> <p>controls, well, column reordering. I do not believe there is any other way to do this other than the standard <a href="http://developer.apple.com/Mac/library/documentation/Cocoa/Conceptual/DragandDrop/UsingDragAndDrop.html#//apple_ref/doc/uid/20000726" rel="nofollow noreferrer">drag-and-drop API for table views</a>.</p> <p><strong>EDIT:</strong> <em>( 2012-11-25 )</em></p> <p>The answer refers to drag-and-drop reordering of <code>NSTableViewColumns</code>; and while it was the accepted answer at the time. It does not appear, now nearly 3 years on, to be correct. In service of making the information useful to searchers, I'll attempt to give the more correct answer.</p> <p>There is no setting that allows drag and drop reordering of <code>NSTableView</code> rows in Interface Builder. You need to implement certain <code>NSTableViewDataSource</code> methods, including:</p> <pre><code>- tableView:acceptDrop:row:dropOperation: - (NSDragOperation)tableView:(NSTableView *)aTableView validateDrop:(id &lt; NSDraggingInfo &gt;)info proposedRow:(NSInteger)row proposedDropOperation:(NSTableViewDropOperation)operation - (BOOL)tableView:(NSTableView *)aTableView writeRowsWithIndexes:(NSIndexSet *)rowIndexes toPasteboard:(NSPasteboard *)pboard </code></pre> <p>There are other SO question that address this reasonably thoroughly, including <a href="https://stackoverflow.com/questions/11116265/reordering-of-nstableview-rows-in-view-based-tableview">this one</a></p>
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    1. COWhy would that affect reordering rows?
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    2. COIt looks like a case of a misread question. Although the question is almost 3 years old, I've attempted to fix it for future searchers. Thanks for pointing out the error.
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    3. COThat's one of the great things about SO ;) Thanks for adding more info.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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