DTM 資料比較器是資料比較和同步的可視化工具。程序根據主鍵（或唯一鍵）值的升序依次查看兩個表的內容。如果程式找不到兩個鍵值相同的記錄，它將記錄以黃色將記錄對不同的行和高光。如果鍵的值重合，程式會將它們放在相同的行中，並在綠色和不均等欄位中以紅色突出顯示相等的欄位。使用映射時，程式會留下不參與比較的列。 在同步過程中，程式使輔助表的內容等於主表的內容。在此過程中，主表中缺少的記錄將從輔助表中刪除，不同的記錄將更新，而輔助表中不存在的記錄將從主錶中插入。 您可以使用以下選項變更此行為： 1） 從輔助中刪除 - 停用此選項將阻止從輔助表中刪除記錄，即使主表中沒有此類記錄。 2） 按主插入 - 停用此選項將阻止從主錶中添加記錄，即使輔助表中沒有此類記錄。 "映射"要素允許比較兩個具有不同結構的表（欄位的數量和名稱）。 在同步過程中，程式創建一組資料同步的插入、更新和刪除語句。用戶可以在特殊對話框中選擇必要的語句或禁止不必要的語句。
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License Agreement This License Agreement covers all existing versions of DTM Data Comparer: demo and commercial. License Agreement is a legal agreement between the end-user and DTM soft. By installing or otherwise using DTM Data Comparer, you agree to be bound by the terms of this Agreement. If you do not agree to the terms of License Agreement, please do not install or use DTM Data Comparer. General Information DTM soft is exclusive owner of all DTM Data Comparer copyrights. The product is licensed, not sold. DTM Data Comparer is protected by copyright laws and international copyright treaties. Demo version. Anyone may install and use demo version of DTM Data Comparer for evaluation and testing purposes. Commercial version. You may install and use one copy of DTM Data Comparer on a single computer. The primary user of the computer on which DTM Data Comparer is installed may make a second copy for his or her exclusive use on a portable computer. You may not reverse engineer, modify, decompile, or disassemble DTM Data Comparer. The Software Product is licensed as a single product. Its component parts may not be separated for use on more than one computer. You may not rent, lease, or lend DTM Data Comparer. Also, You may not resell, or otherwise transfer for value, DTM Data Comparer. Without prejudice to any other rights, DTM soft may terminate this License Agreement if you fail to comply with the terms and conditions of this Agreement. In such event, you must destroy all copies of DTM Data Comparer and all of its component parts. You may permanently transfer all of your rights under this license, provided you retain no copies, you transfer all of DTM Data Comparer (including all component parts), and the recipient agrees to the terms of this license. DTM Data Comparer IS DISTRIBUTED "AS IS". NO WARRANTY OF ANY KIND IS EXPRESSED OR IMPLIED. YOU USE DTM Data Comparer AT YOUR OWN RISK. DTM soft WILL NOT BE LIABLE FOR DATA LOSS, DAMAGES, LOSS OF PROFITS OR ANY OTHER KIND OF LOSS WHILE USING OR MISUSING THIS SOFTWARE. Support and Upgrades During one year after ordering, you are entitled to free technical services and support for DTM Data Comparer which is provided to you by DTM soft. During this period, e-mail support is unlimited and includes technical and support questions. Also, during one year, you may access to free updates to DTM Data Comparer when and as DTM soft publishes them on www.sqledit.com. After end of the described period you may continue to use the software product in accordance with the terms of this Agreement except free support and upgrades. After end of the free support and updates period (one year), you may purchase annual Upgrade and Support subscription. If you ordered a few DTM licenses, you will access to free upgrade and support period and will use subscriptions independently.