Bỏ qua, đến nội dung chính

Vận hành & an toàn dữ liệu

Nhập / kết nối dữ liệu từ nhiều máy và sao lưu dữ liệu

Trang này chuyển thể từ tài liệu hướng dẫn gốc đi kèm phần mềm, nên một vài chỗ có thể còn nhắc tới cấu hình máy tính cũ. Từ bản 4.0.2, chương trình chạy trên .NET Framework 4.8 và hỗ trợ Windows 7 đến 11 — xem thông tin phiên bản mới nhất.

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Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";} </style> <![endif]--><!--[if gte mso 9]><xml> <o:shapedefaults v:ext="edit" spidmax="3074"/> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext="edit"> <o:idmap v:ext="edit" data="1"/> </o:shapelayout></xml><![endif]--> </head> <body lang=EN-US link=blue vlink=purple style='tab-interval:.5in'> <div class=Section1> <p>[<a href="index.htm">Tr� v� m�c l�c</a>] [<a href="http://quanlygiaoxu.net">Trang ch�</a>]</p> <h1 align=center style='text-align:center'><span>Nh�p t� nhi�u m�y t�nh v� sao l�u<o:p></o:p></span></h1> <blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'> <h4><span>Ch�c nng n�y gi�p ch�ng ta nh�p d� li�u t� nhi�u m�y, sau � k�t n�i ch�ng l�i trong m�t ch��ng tr�nh th�ng nh�t. Ph�n n�y kh� quan tr�ng v� �nh h��ng �n to�n b� d� li�u c�a ch��ng tr�nh, n�n h�y �c k� t�ng b��c v� c�c ch� � trong h��ng d�n n�y.<o:p></o:p></span></h4> </blockquote> <h2><span>I. C�ch nh�p d� li�u t� nhi�u m�y<o:p></o:p></span></h2> <p>Tr��c ti�n, � nh�p d� li�u t� nhi�u m�y, m�i m�y s� d�ng �u ph�i ��c c�i �t ch��ng tr�nh nh� h��ng d�n tr�n <a href="http://quanlygiaoxu.net">website</a>. Sau khi c�i �t ho�n t�t, ch�ng ta b�t �u nh�p d� li�u cho t�ng m�y.</p> <p>Ph�i x�c �nh r� m�y n�o l� m�y ch�nh, m�y n�o l� m�y con (m�y ph�). D� li�u c�a c�c m�y con s� ��c t�p trung v� 1 m�y ch�nh.</p> <h2><span>II. C�ch k�t n�i d� li�u t� nhi�u m�y v� m�t m�y<o:p></o:p></span></h2> <p>Sau khi � ho�n t�t vi�c nh�p d� li�u tr�n t�ng m�y, ta th�c hi�n t�ng b��c nh� sau � k�t n�i d� li�u ��c nh�p v�o chung m�t m�y:</p> <p>1. Sao l�u d� li�u ch��ng tr�nh (b��c n�y th�c hi�n � c�c m�y con)</p> <blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'> <p>- V�o menu &quot;H� th�ng&quot;, ch�n m�c &quot;Sao l�u d� li�u ch��ng tr�nh&quot;</p> <p>- Ch��ng tr�nh s� h�i n�i l�u tr� t�p tin sao l�u, ch�n th� m�c l�u tr� t�p tin n�y (t�p tin c� u�i .zip)</p> </blockquote> <p>2. K�t n�i d� li�u nh�p t� nhi�u m�y (b��c n�y th�c hi�n � m�y ch�nh)</p> <blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'> <p>- Ch�p c�c t�p tin c�a c�c m�y con � b��c II.1 v�o m�t n�i n�o � m� c� th� truy c�p ��c � m�y ch�nh.</p> <p>- V�o menu &quot;H� th�ng&quot;, ch�n m�c &quot;K�t n�i d� li�u t� c�ng ch��ng tr�nh&quot;, m�t m�n h�nh hi�n ra nh� sau:</p> <p><span style='mso-no-proof:yes'><img border=0 width=617 height=447 id="_x0000_i1025" src="image/merge_data.JPG"></span></p> <p>- Nh�p n�t &quot;Ch�n&quot; v� ch�n 1 t�p tin c�a m�y con.</p> <p>- Ch�n m�c  Ch�p � n�u c� d� li�u tr�ng nhau n�u ch�n ch�n d� li�u t� t�p tin ��c ch�n ph�a tr�n ch�a d� li�u ch�nh x�c h�n, n�u kh�ng ch�c i�u n�y xin �ng ch�n m�c n�y. V� d�: trong d� li�u ch��ng tr�nh ch�nh v� ch��ng tr�nh ph� �u c� anh  Nguy�n Vn A , nh�ng ch��ng tr�nh ph� l�i ph� tr�ch th�ng tin v� anh n�y n�n d� li�u c�a ch��ng tr�nh ph� ch�nh x�c h�n, khi k�t n�i, ch��ng tr�nh ch�nh s� l�y th�ng tin ng��i n�y c�a ch��ng tr�nh ph� � l�n th�ng tin ng��i n�y trong ch��ng tr�nh ch�nh. <i style='mso-bidi-font-style:normal'>M�c n�y ch� c� t�c d�ng n�u th�a i�u ki�n ��c n�u trong m�c  c�c l�u � b�n d��i.</i></p> <p>- Nh�p n�t &quot;B�t �u&quot; � b�t �u k�t n�i d� li�u. L�c n�y, n�t &quot;B�t �u&quot; s� chuy�n th�nh n�t &quot;T�m d�ng&quot;.</p> <p>- N�t &quot;T�m d�ng&quot; v� &quot;H�y b�&quot; cho ph�p ta t�m ng�ng ho�c h�y b� qu� tr�nh k�t n�i d� li�u, tuy nhi�n i�u n�y kh�ng ��c khuy�n d�ng.</p> <p>- Sau khi k�t th�c qu� tr�nh k�t n�i, ch��ng tr�nh s� th�ng b�o k�t qu� th�nh c�ng hay th�t b�i. C� th� c� l�i x�y ra gi�a ch�ng th� ch��ng tr�nh s� th�ng b�o cho bi�t l�i t�i gi�o d�n / gia �nh n�o. N�u c� b�t k� tr�c tr�c n�o, xin vui l�ng li�n h� t�c gi�.</p> <p>- Ti�p t�c ch�n t�p tin c�a m�y con kh�c cho �n khi � k�t n�i h�t t�t c� c�c t�p tin.</p> </blockquote> <p><b>C�c l�u � (n�n �c k�):</b></p> <blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'> <p>- Ph�i �m b�o phi�n b�n ch��ng tr�nh tr�n m�y ch�nh c�ng phi�n b�n ho�c m�i h�n phi�n b�n d�ng tr�n m�y con nh�p li�u.</p> <p>- Ch��ng tr�nh ch� k�t n�i th�ng tin Gi�o h�, Gia �nh, Gi�o d�n.</p> <p><i style='mso-bidi-font-style:normal'><span style='mso-spacerun:yes'>�</span><b style='mso-bidi-font-weight:normal'>i�u ki�n k�t n�i ch�nh x�c</b>: K� t� phi�n b�n 2.0.0.2 ch�c nng k�t n�i d� li�u ��c nh�p t� nhi�u m�y � ��c n�ng cao � �m b�o kh�ng c� d� li�u tr�ng l�p kh�ng mong mu�n trong qu� tr�nh k�t n�i d� li�u nh�p t� nhi�u m�y. Tuy nhi�n, ch�c nng n�y ch� hi�u qu� n�u 2 m�y nh�p li�u �u l� phi�n b�n m�i nh�t. Trong �: m�y ph� ph�i b�t �u nh�p li�u t� phi�n b�n m�i (ngh)a l� ch�a t�ng c� d� li�u c�a phi�n b�n tr��c kia), m�y ch�nh ph�i l� phi�n b�n m�i. N�u �m b�o c�c i�u � s� kh�ng s� b� tr��ng h�p tr�ng d� li�u kh�ng mong mu�n n�a.<o:p></o:p></i></p> <p>N�u ch�a �m b�o c�c y�u c�u tr�n, xin �c k� c�c l�u � b�n d��i.</p> <p>- Tr��c khi k�t n�i, c�n xem x�t k� l��ng d� li�u c�a t�ng m�y � �m b�o h�n ch� t�i a vi�c sai s�t d� li�u. V� vi�c th�c hi�n k�t n�i n�y ch� n�n th�c hi�n duy nh�t 1 l�n cho m�i t�p tin sao l�u t� m�y con. Th�c hi�n nhi�u l�n trong m�t s� tr��ng h�p c� th� d�n �n tr��ng h�p tr�ng d� li�u.</p> <p>- Sau khi � k�t n�i d� li�u c�c m�y con chung v�o m�t m�y ch�nh, c�c m�y con c�n ��c ph�c h�i l�i t�nh tr�ng nh� khi v�a c�i �t ch��ng tr�nh (kh�ng c� d� li�u) � ti�p t�c nh�p li�u n�u c�n thi�t.</p> <p>- Tr�nh tuy�t �i vi�c s�a d� li�u � ��c k�t n�i v�o m�y ch�nh tr�n m�y con (ho�c ng��c l�i) r�i sau � l�i k�t n�i l�n n�a. Vi�c ch�nh s�a ch� c� th� di�n ra n�u d� li�u m�y � ch�a t�ng ��c k�t n�i v�o m�y ch�nh l�n n�o, n�u kh�ng s� c� th� x�y ra tr��ng h�p tr�ng d� li�u sau khi k�t n�i v�o m�y ch�nh. Nguy�n nh�n c�a vi�c n�y c� th� hi�u nh� sau:</p> <blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'> <p>Khi k�t n�i d� li�u c�a m�y con v�o m�y ch�nh, �ng v�i t�ng gi�o d�n, ch��ng tr�nh s� so s�nh &quot;<i>t�n th�nh, h� t�n, ph�i, ng�y sinh</i>&quot; � nh�n bi�t gi�o d�n � c� t�n t�i trong ch��ng tr�nh ch�a, n�u ch�a th� nh�p, n�u c� r�i th� b� qua. Gi� s� ta � nh�p 1 gi�o d�n Nguy�n Vn A (sinh ng�y 17/11/1982, ph�i Nam, t�n th�nh Matth�u) t� m�y con v�o m�y ch�nh. Sau � ta ph�t hi�n ra nh�p sai ng�y sinh, ta nh�p l�i th�nh ng�y 17/11/1983. Sau � l�i d�ng d� li�u n�y k�t n�i v�o m�y ch�nh l�n n�a. L�c n�y, ch��ng tr�nh tr�n m�y ch�nh s� so s�nh ng�y sinh, th�y kh�c, s� xem nh� m�t gi�o d�n m�i, n� s� nh�p th�m m�t gi�o d�n c�ng h� t�n, ph�i, t�n th�nh, ch� kh�c ng�y sinh, nh� v�y s� d� ra 1 gi�o d�n. � l� l� do v� sao ��c khuy�n sau khi k�t n�i d� li�u t� m�y con, n�n ph�c h�i l�i t�nh tr�ng ban �u nh� khi ch�a nh�p d� li�u cho m�y con r�i m�i nh�p ti�p. L�c n�y, ta c� th� ch�nh s�a d� li�u tr�n m�y ch�nh m� kh�ng lo b� tr�ng l�p th�ng tin kh�ng mong mu�n. V� l�c �, m�y con � kh�ng c�n d� li�u c�a ng��i � ��c nh�p v�o m�y ch�nh. (t��ng t� cho tr��ng h�p nh�p gia �nh)</p> </blockquote> <p>&nbsp;</p> </blockquote> <p>[<a href="index.htm">Tr� v� m�c l�c</a>]</p> </div> </body> </html>

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