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<div>The pain of asynchronous access can be alleviated or even solved with an API for transactions, or a group of SQL queries that need be executed in order. Commonly, if a transaction fails in the middle, the database is rolled-back to the state before the transaction started.</div><div><br class="webkit-block-placeholder"></div><div>There can then be a callback when the transaction finished or fails, with details on what query failed.</div><div><br class="webkit-block-placeholder"></div><div><div>On Sep 20, 2007, at 10:13 AM, Aaron Boodman wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Verdana; font-size: 11px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; ">That said, it will be even more common with databases to have multiple asynchronous operations in a row than it is today with XHR. Doing this all asynchronously will be incredibly painful.<span class="Apple-converted-space"> </span><br></span></blockquote></div><br><div> <span class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Verdana; font-size: 11px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><div style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font class="Apple-style-span" size="2"><span class="Apple-style-span" style="font-size: 10px;"><span class="Apple-style-span" style="font-size: 10px; ">— Timothy Hatcher</span></span></font></div></div><br class="Apple-interchange-newline"></span> </div><br></body></html>