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¾×¼¼½º 2002 »õ·Î¿î±â´É
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¾×¼¼½º 2000, ±è±Ô°æ´ÔÀÇ µ¥ÀÌÅͺ£À̽º ±âÃÊ ´ÙÁö±â - Á¦20°­. ¾×¼¼½º Äõ¸® #2, Access 2000
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Á¦20°­. ¾×¼¼½º Äõ¸® #2


¾×¼¼½ºÀÇ Äõ¸® À¯Çü

ÁúÀǹ®ÀÇ ½ÃÀÛ Å°¿öµå³ª Áß¿äÇÑ Å°¿öµå¿¡ ÀÇÇØ Äõ¸® À̸§À» ºÙÀÌ°í ºÐ·ùÇÕ´Ï´Ù.
´ÙÀ½ ³»¿ëÀ» Àß Àо½Ã°í °¢ Äõ¸®ÀÇ ¹®Àå ±¸¼ºÀÇ Æ¯Â¡À» ÀÌÇØÇϽõµ·Ï ÇϽʽÿÀ.

Âü°í]
QBE â ´ë½Å Äõ¸®ÀÇ SQL ³»¿ëÀ» º¸½Ã·Á¸é SQL ÀÔ·ÂâÀ» ¿­¾î¾ß ÇÕ´Ï´Ù. SQL ÀÔ·ÂâÀ» ¿©´Â °Í¿¡ ´ëÇؼ­´Â ÀÌ °­ÁÂÀÇ Á¦ÀÏ ¸¶Áö¸· ºÎºÐÀ» Âü°í ÇϽʽÿÀ.

- ¼±Åà Äõ¸®
- ¸Å°³º¯¼ö Äõ¸®
- Å©·Î½ºÅÇ Äõ¸®
- ½ÇÇà Äõ¸®
- SQL Äõ¸®

 
¼±Åà Äõ¸®

¼±Åà Äõ¸®´Â °¡Àå ÀϹÝÀûÀÎ À¯ÇüÀÇ Äõ¸®ÀÔ´Ï´Ù. ÁúÀǹ®ÀÌ SELECT·Î ½ÃÀÛÇϱ⠶§¹®¿¡ SELECT Query¶ó°í ºÎ¸¨´Ï´Ù.

- ÁöÁ¤ÇÑ Á¶°ÇÀ» »ç¿ëÇÏ¿© Çϳª ÀÌ»óÀÇ Å×ÀÌºí¿¡¼­ µ¥ÀÌÅ͸¦ °Ë»öÇÑ ´ÙÀ½ ¿øÇÏ´Â ¼ø¼­´ë·Î µ¥ÀÌÅ͸¦ Ç¥½ÃÇÕ´Ï´Ù.
- ¾à°£ÀÇ Á¦ÇÑÀÌ ÀÖÁö¸¸ ¼±Åà Äõ¸®ÀÇ µ¥ÀÌÅͽÃÆ®¿¡¼­ ·¹Äڵ带 ¾÷µ¥ÀÌÆ®ÇÕ´Ï´Ù. ÀÌ°ÍÀº ÈçÈ÷ Ãʺ¸ÀÚ ºÐµéÀÌ ´çȲÇÏ¿© Áú¹®ÇÏ´Â ³»¿ë Áß¿¡ ÇϳªÀÔ´Ï´Ù. ÀÌ ºÎºÐÀº µû·Î ¼³¸íÀ» µå¸®°Ú½À´Ï´Ù.
- ·¹Äڵ带 ±×·ìÈ­ÇÏ°í ÇÕ°è, °³¼ö, Æò±Õ, ±âŸ ¿ä¾à °è»êÀ» ¼öÇàÇÒ ¼ö ÀÖ½À´Ï´Ù.µû¶ó¼­ ÀÌ°ÍÀ» ¿ä¾àÁúÀǶó°í ºÎ¸£±âµµ ÇÕ´Ï´Ù. ¶Ç ÁúÀǹ®¿¡ GROUP BY Å°¿öµå°¡ ¾²À̹ǷΠGROUP-BY ÁúÀǶó°íµµ ÇÕ´Ï´Ù.

¿¹] ´ÙÀ½ ÁúÀǹ®Àº ´ÜÁ¾µÇÁö ¾ÊÀº Á¦Ç°¸¸ »Ì¾Æº¸´Â ¼±ÅÃÁúÀÇÀÇ ³»¿ëÀÔ´Ï´Ù.

SELECT [Product List].ProductID, [Product List].ProductName
FROM Products AS [Product List]
WHERE ((([Product List].Discontinued)=No))
ORDER BY [Product List].ProductName;

¿ä¾àÁúÀÇ´Â QBE ÁúÀǵðÀÚÀΠâ¿¡¼­´Â ½Ã±×¸¶ Ç¥½Ã¸¦ °¡Áö´Â [¿ä¾à]À̶ó´Â ¸Þ´º ¹öÆ°À» ´©¸£¸é ÀÛ¼ºÇÒ ¼ö ÀÖ½À´Ï´Ù.
Sum(), Avg(), Min(), Max(), Std() µî ÁúÀÇ°è»ê ÇÔ¼ö´Â ÁúÀÇ¿¡¼­¸¸ »ç¿ëµË´Ï´Ù. ±×¸®°í Group By Äõ¸®³ª CrossTab Äõ¸®¿¡¼­¸¸ »ç¿ëµË´Ï´Ù.


¿¹] ´ÙÀ½Àº ÁÖ¹®º° ¼Ò°è¸¦ ³»´Â ÇÕ°èÁúÀÇÀÔ´Ï´Ù. SELECT·Î ½ÃÀÛÇϱ⠶§¹®¿¡ ¼±ÅÃÁúÀÇ¿¡ ¼ÓÇÕ´Ï´Ù. GROUP BY Å°¿öµå°¡ ´ë»óÀ» ±¸ºÐÇØÁÖ°í Sum() ÁúÀÇ°è»êÇÔ¼ö°¡ Çհ踦 ³»ÁÝ´Ï´Ù.

SELECT [Order Details].OrderID, Sum(CCur([UnitPrice]*[Quantity]*(1-[Discount])/100)*100) AS Subtotal
FROM [Order Details]
GROUP BY [Order Details].OrderID;


 

¸Å°³ º¯¼ö Äõ¸®

Äõ¸®¸¦ ¿­ ¶§ ·¹ÄÚµå °Ë»ö Á¶°ÇÀ̳ª Çʵ忡 »ðÀÔÇÒ °ª°ú °°Àº Á¤º¸¸¦ ÀÔ·ÂÇÒ ¼ö ÀÖ´Â ´ëÈ­ »óÀÚ¸¦ Ç¥½ÃÇÏ´Â Äõ¸®ÀÔ´Ï´Ù. ÁúÀǹ®ÀÌ PARAMETERS·Î ½ÃÀÛÇϱ⠶§¹®¿¡ PARAMETER Query¶ó°í ºÎ¸¨´Ï´Ù.
¸Å°³º¯¼ö Äõ¸®´Â Á¶°Ç¸¸ ´Ù¸¥ ¿©·¯ ÀÛ¾÷À» ¹Ýº¹ÀûÀ¸·Î ÇÒ ¶§ À¯¿ëÇÕ´Ï´Ù. ¿¹¸¦ µé¾î, ¿ùº° ÀÚ·á °Ë»öÀ̳ª ¿ùº° ¼Òµæ °è»ê µîÀ» ÇÏ°íÀÚ ÇÒ ¶§ Æí¸®ÇÕ´Ï´Ù.

¸Å°³º¯¼ö
¸Å°³º¯¼ö´Â µÉ ¼ö ÀÖÀ¸¸é ¹Ì¸® Á¤ÀǸ¦ ÇÑ ´ÙÀ½ »ç¿ëÇϽʽÿÀ.
¸Å°³º¯¼ö¸¦ Á¤ÀÇÇÏ·Á¸é ¸Þ´º¿¡¼­ [Äõ¸®]-[¸Å°³º¯¼ö¡¦]¸¦ ½ÇÇàÇÏ¸é µ¥ÀÌÅÍ Çü½Ä±îÁö Á¤ÀǸ¦ ÇÒ ¼ö ÀÖ½À´Ï´Ù.
±×·¯³ª ¸Å°³º¯¼ö¸¦ ¸í½ÃÀûÀ¸·Î Á¤ÀÇÇÏÁö ¾Ê¾Ò´õ¶óµµ Äõ¸®¿¡ ¾ø´Â À̸§(Çʵå¸í)À» »ç¿ëÇϸé Äõ¸®´Â ¸Å°³º¯¼ö¶ó ¿©±â°í ó¸®ÇÕ´Ï´Ù.
´Ü, Å©·Î½ºÅÇ ÁúÀÇ¿¡¼­´Â ¹Ýµå½Ã ¸Å°³º¯¼ö¸¦ ¸í½ÃÀûÀ¸·Î Á¤ÀÇÇÑ ´ÙÀ½¿¡ »ç¿ëÇÏ¼Å¾ß ÇÕ´Ï´Ù.

PARAMETERS ½ÃÀÛÀÏ DateTime, Á¾·áÀÏ DateTime;
SELECT Employees.Country, Employees.LastName, Employees.FirstName, Orders.ShippedDate,
Orders.OrderID, [Order Subtotals].Subtotal AS SaleAmount
FROM Employees INNER JOIN (Orders INNER JOIN [Order Subtotals] ON
Orders.OrderID = [Order Subtotals].OrderID) ON Employees.EmployeeID = Orders.EmployeeID
WHERE (((Orders.ShippedDate) Between [½ÃÀÛÀÏ] And [Á¾·áÀÏ]));


 
Å©·Î½ºÅÇ Äõ¸®

Å©·Î½ºÅÇ Äõ¸®¸¦ »ç¿ëÇÏ¸é µ¥ÀÌÅ͸¦ °è»êÇÏ°í À籸¼ºÇÒ ¼ö ÀÖÀ¸¹Ç·Î µ¥ÀÌÅ͸¦ ½±°Ô ºÐ¼®ÇÒ ¼ö ÀÖ½À´Ï´Ù. Å©·Î½ºÅÇ Äõ¸®´Â µ¥ÀÌÅͽÃÆ®ÀÇ ¿ÞÂÊ¿¡ ÀÖ´Â Á¤º¸¸¦ ¼¼·Î·Î ±×·ìÈ­Çϰųª ¸Ç À§¿¡ ÀÖ´Â Á¤º¸¸¦ °¡·Î·Î ±×·ìÈ­ÇÑ µ¥ÀÌÅÍ¿¡ ´ëÇØ ÇÕ°è, Æò±Õ, °³¼ö, ±âŸ ¿ä¾à µîÀ» °è»êÇÕ´Ï´Ù.

¿ä¾àÁúÀÇ¿Í ºñ½ÁÇÏÁö¸¸ Å©·Î½ºÅÇÀ̶õ ±×¸®µå°¡ Çϳª ´õ »ý°å½À´Ï´Ù. Å©·Î½ºÅÇ¿¡´Â Çà°ú ¿­ ¸Ó¸®±ÛÀÌ ÀÖ°í µÎ [Çà]°ú [¿­]ÀÌ ¼­·Î ±³Â÷ÇÏ´Â ºÎºÐ¿¡ ÀûÀ» [¿ä¾à°ª]ÀÌ Á¸ÀçÇØ¾ß ÇÕ´Ï´Ù.


TRANSFORM Sum(CCur([Order Details].UnitPrice*[Quantity]*(1-[Discount])/100)*100)
 AS ProductAmount
SELECT Products.ProductName, Orders.CustomerID, Year([OrderDate]) AS OrderYear
FROM Products INNER JOIN (Orders INNER JOIN [Order Details] ON Orders.OrderID =
[Order Details].OrderID) ON Products.ProductID = [Order Details].ProductID
WHERE (((Orders.OrderDate) Between #1/1/1997# And #12/31/1997#))
GROUP BY Products.ProductName, Orders.CustomerID, Year([OrderDate])
PIVOT DatePart("q",[OrderDate],1,0) & "/4 ºÐ±â" In ("1/4 ºÐ±â","2/4 ºÐ±â","3/4 ºÐ±â","4/4 ºÐ±â");

ÁúÀÇ°è»êÇÔ¼ö³ª ±¸°£À» Á¤Çϱâ À§ÇÑ ÇÔ¼ö, ƯÈ÷ ³¯Â¥ Çʵ忡¼­ ±¸°£À» Á¤Çϱâ À§ÇÑ ³¯Â¥ ÇÔ¼öµéÀÌ ¸¹ÀÌ »ç¿ëµÇ¹Ç·Î ³¯Â¥ °ü·Ã ÇÔ¼öµéÀº µµ¿ò¸»À» º¸½Ã°í ²À ÀÍÇô µÎ½Ê½Ã¿À.

ÀÌ·¸°Ô ÇÔ¼öµéÀÌ »ç¿ëµÇ´Â °Í»Ó¸¸ ¾Æ´Ï¶ó Å©·Î½ºÅÇÁúÀÇ´Â ¾²ÀÌ´Â Å°¿öµåµµ ¸¹¾Æ¼­ ±¸¹®ÀÌ º¹ÀâÇÏ°Ô ´À²¸Á® Ãʺ¸ÀÚ ºÐµé¿¡°Ô´Â »ó´çÈ÷ ºÎ´ã½º·¯¿î Äõ¸®¿¡ ÇØ´çµË´Ï´Ù. Å©·Î½ºÅÇ Äõ¸® ¸¶¹ý»ç¸¦ ÀÌ¿ëÇÏ¿© ¸¸µå´Â °Íµµ Ãʺ¸ÀÚ ºÐµé¿¡°Ô´Â ±×·¸°Ô ½±Áö°¡ ¾Ê½À´Ï´Ù.

Å©·Î½ºÅÇ Äõ¸®¸¦ ¸¸µé ¶§ ´ÙÀ½°ú °°ÀÌ »ý°¢À» Á¤¸®ÇÏ°Ô µÇ¸é ¾î·ÆÁö ¾Ê½À´Ï´Ù.

À§ ¿¹Á¦´Â [Á¦Ç°º°]·Î ¾î¶² [°í°´]ÀÌ [ÇØ]¸¶´Ù ¾´ ±Ý¾×À» [ºÐ±â]º°·Î ±¸ºÐÇؼ­ ¾Ë¾Æº¸°íÀÚ ÇÏ´Â ÁúÀǹ®ÀÔ´Ï´Ù.
ÀÌ°ÍÀ» Á¤¸®Çϸé [Á¦Ç°º°]-[°í°´º°]-[¿¬µµº°]-[ºÐ±âº°]-[±¸¸Å±Ý¾×]À¸·Î µÇ°í TRNSFORM Á¦ÀÏ µÚÀÇ Ç׸ñÀÌ TRNSFORM, ±× ¾Õ¿¡ ÀÖ´Â ¼¼ºÎÁ¶°ÇÀÌ PIVOT, ±×¸®°í ³ª¸ÓÁö Á¶°ÇµéÀÌ GROUP BY¿¡ °ü·ÃµË´Ï´Ù. ÀÌ°ÍÀ» ´Ù½Ã ±¸ºÐÇغ¸¸é, ¾Ë°íÀÚ ÇÏ´Â °ªÀ» Ç×»ó ¸¶Áö¸·¿¡ ¹èÄ¡¸¦ ÇÏ°í ÀÌ ¾Õ¿¡´Â ±× ±âÁصéÀ» Àû´Âµ¥ [±âÁصé(¼ø¼­´ë·Î)]-[¸¶Áö¸· ¼¼ºÎ±âÁØ]-[¿ä¾à°è»ê ÇÒ °Í] ¼ø¼­·Î ¹èÄ¡ÇÕ´Ï´Ù. ÀÌ°ÍÀº [Group By]-[Pivot]-[Transform]¿¡ ÇØ´çµË´Ï´Ù.
Å©·Î½ºÅÇÄõ¸® ¸¶¹ý»ç¸¦ ÀÌ¿ëÇÒ ¶§ ÀÌ ¼ø¼­´ë·Î °ªÀ» ¼³Á¤ÇØ ÁÖ¸é ¿øÇÏ´Â Äõ¸®°¡ ¸¸µé¾î Áú °Ì´Ï´Ù.

1. GROUP BY ´ÙÀ½¿¡ ³õÀÎ °ÍÀº °³º°ÀûÀÎ ·¹ÄÚµå(Çà)¸¦ ±×·ìÀ¸·Î ¸¸µé¾îÁø ³»¿ëÀ¸·Î ¿©ÀüÈ÷ Çà¿¡ ³²¾Æ ÀÖ°Ô µÇ°í µû¶ó¼­ Çà ¸Ó¸®±ÛÀÌ µÈ´Ù.
2. PIVOT ´ÙÀ½¿¡ ¾²¿©Áø ¼¼ºÎ Á¶°ÇÀº ¿­ ¸Ó¸®±ÛÀÌ µÈ´Ù.
3. TRANSFORM ´ÙÀ½¿¡ ÁúÀÇ°è»êÇÔ¼ö¸¦ »ç¿ëÇÏ¿© °è»êÇÑ °ªÀ» ³ªÅ¸³¾ °ª Çʵå·Î Å×À̺íÀ» ä¿ì´Â °ªÀÌ µÈ´Ù.


 
½ÇÇà Äõ¸®

½ÇÇà Äõ¸®´Â ¿©·¯ ·¹Äڵ带 ÇѲ¨¹ø¿¡ º¯°æÇϰųª À̵¿ÇÒ ¼ö ÀÖ´Â Äõ¸®ÀÔ´Ï´Ù. ½ÇÇà Äõ¸®¿¡´Â ³× °¡Áö À¯ÇüÀÌ ÀÖ½À´Ï´Ù. ½ÇÇà Äõ¸®´Â µ¥ÀÌÅ͸¦ º¯°æÇϹǷΠÇ×»ó Á¶½ÉÇؼ­ »ç¿ëÇϵµ·Ï ÇÕ´Ï´Ù. Ãʺ¸ÀÚ ºÐµéÀº ÀÌ·± °Ô ÀÖ±¸³ª ÇÏ´Â Á¤µµ·Î¸¸ ¾Ë¾Æ µÎ½Ê½Ã¿À.

»èÁ¦ Äõ¸® Å×À̺í Çϳª À̻󿡼­ ·¹ÄÚµå ±×·ìÀ» »èÁ¦ÇÕ´Ï´Ù. ¿¹¸¦ µé¾î ´ÜÁ¾Á¦Ç°¸¸ ÀÏ°ý »èÁ¦ÇÒ ¼ö ÀÖ½À´Ï´Ù.
  DELETE Employees.*
    FROM Employees
    WHERE Title = ¡°Trainee¡±;

¾÷µ¥ÀÌÆ® Äõ¸® ¾÷µ¥ÀÌÆ® Äõ¸®´Â Å×À̺í Çϳª À̻󿡼­ ·¹ÄÚµå ±×·ìÀ» ÀüüÀûÀ¸·Î º¯°æÇÕ´Ï´Ù. ¿¹¸¦ µé¾î, Á¦Ç°ÀÇ °¡°ÝÀ̳ª ÀÓ±Ý µîÀ» ÀÏ°ýÇؼ­ 10%¾¿ ¿Ã¸®°íÀÚ ÇÏ´Â °æ¿ì¿¡ »ç¿ëµË´Ï´Ù.
  UPDATE Employees
    SET ReportsTo = 5
    WHERE ReportsTo = 2;

Ãß°¡ Äõ¸® Ãß°¡ Äõ¸®´Â Å×À̺í Çϳª À̻󿡼­ ·¹ÄÚµå ±×·ìÀ» °¡Á®´Ù Å×À̺í Çϳª ÀÌ»óÀÇ ³¡¿¡ Ãß°¡ÇÕ´Ï´Ù. ¿¹¸¦ µé¾î, »õ °í°´µé°ú ±× °í°´µé¿¡ ´ëÇÑ µ¥ÀÌÅÍ°¡ Æ÷ÇÔµÈ Å×À̺íÀÌ ÀÖ´Â µ¥ÀÌÅͺ£À̽º°¡ »ý±ä °æ¿ì, ¸ðµç °ü·Ã Á¤º¸¸¦ µ¥ÀÌÅͺ£À̽º¿¡ ÀÏÀÏÀÌ ÀÔ·ÂÇÏ´Â ´ë½Å Customers Å×ÀÌºí¿¡ Ãß°¡Çϱ⸸ ÇÏ¸é µË´Ï´Ù.

  ´ÙÁß ·¹ÄÚµå Ãß°¡ Äõ¸®:
   INSERT INTO Customers
    SELECT *
    FROM [New Customers];

  ´ÜÀÏ ·¹ÄÚµå Ãß°¡ Äõ¸®:
   INSERT INTO Employees (FirstName,LastName, Title)
    VALUES ('Harry', 'Washington', 'Trainee');

Å×ÀÌºí ¸¸µé±â Äõ¸® Å×ÀÌºí ¸¸µé±â Äõ¸®´Â Å×À̺í Çϳª À̻󿡼­ µ¥ÀÌÅÍÀÇ ÀϺγª Àüü¸¦ °¡Á®¿Í »õ Å×À̺íÀ» ¸¸µì´Ï´Ù. ÀÌ Äõ¸®´Â ´Ù¸¥ ¾×¼¼½º µ¥ÀÌÅͺ£À̽º³ª ÀÌÀü ·¹Äڵ尡 µé¾î ÀÖ´Â ±â·Ï Å×À̺í·Î ³»º¸³¾ Å×À̺íÀ» ¸¸µé ¶§ À¯¿ëÇÕ´Ï´Ù.

  SELECT Products.*
    INTO ´ÜÁ¾Ç°¸ñÅ×À̺í
    FROM Products
    WHERE ((( Products.Discontuned) = True));

 
SQL Äõ¸®

Åë°ú Äõ¸®, µ¥ÀÌÅÍ Á¤ÀÇ Äõ¸®, ÅëÇÕ Äõ¸®´Â QBE µðÀÚÀΠâÀ» ÀÌ¿ëÇÒ ¼ö ¾ø°í ¸Þ´º¿¡¼­ [º¸±â]-[SQL º¸±â]·Î SQL ÀÔ·ÂâÀ» ¿¬ ´ÙÀ½ Á÷Á¢ SQL ¹®À» ÀÛ¼ºÇØ¾ß ÇÕ´Ï´Ù.
¶Ç ÇÏÀ§ Äõ¸®´Â Äõ¸® µðÀÚÀÎ ´«±ÝÀÇ Çʵå ÇàÀ̳ª Á¶°Ç Çà¿¡ SQLÀ» ÀÔ·ÂÇÕ´Ï´Ù.

[SQL ÀÔ·Ââ º¸±â]
¾×¼¼½º Äõ¸®¸¦ µðÀÚÀκ¸±â·Î ¿­¸é ±×·¡ÇÈÀÎÅÍÆäÀ̽ºÀÎ QBE µðÀÚÀΠ⸸ º¸ÀÔ´Ï´Ù. ½ÇÁ¦ ÀÛ¼ºµÈ SQL¹®À» È®ÀÎÇϽ÷Á¸é Äõ¸®¸¦ µðÀÚÀÎ º¸±â·Î ¿­°í ¸Þ´º¿¡¼­ [º¸±â]-[SQL º¸±â]¸¦ Ŭ¸¯ÇϽʽÿÀ.

Áö±Ý±îÁö ¸¹ÀÌ »ç¿ëÇÏ´Â Äõ¸®¿¡ ´ëÇØ ¼³¸íÀ» ÇÏ¿´½À´Ï´Ù. °£´ÜÇÏ°Ô ¼³¸íÀ» ÇßÁö¸¸ SQL¹®À» óÀ½ Á¢ÇϽŠºÐµé¿¡°Ô´Â »ó´çÈ÷ ¾î·Á¿î ³»¿ëÀ̾úÀ» °Ì´Ï´Ù. ±×·¸Áö¸¸ ½Ç¸ÁÇÏÁö ¸¶½Ã°í ¡®º¸°í ¶Ç º¸°í¡¯ ÇϽøé Àͼ÷ÇØÁö½Ã¸®¶ó ¹Ï½À´Ï´Ù.

¿ÀÇǽº Æ©ÅÍÀÇ ¹«·á°­Á ¼½¼Ç¿¡¼­ QBE(Query By Example) â¿¡¼­ °¢°¢ÀÇ Äõ¸®¸¦ ¸¸µé°í Çʵ带 Ãß°¡ÇÏ°í, Á¤·ÄÇÏ°í, Á¶°Ç¿¡ µû¶ó ·¹Äڵ带 ÁúÀÇÇÏ°í, °è»êÇʵ带 ¸¸µå´Â °Í µî¿¡ ´ëÇؼ­ ¹Ýµå½Ã °øºÎ¸¦ ÇϽõµ·Ï ÇϽʽÿÀ. ±×¸®°í SQLâÀ» ¿­¾î Ç×»ó QBE·Î ¸¸µç Äõ¸®ÀÇ ³»¿ëÀ» È®ÀÎÇÏ´Â ½À°üÀ» °¡Áö½Ã¸é SQL¹®¿¡ ´ëÇؼ­´Â Á¶¸¸°£ Àͼ÷ÇØÁö½Ç °Ì´Ï´Ù.

¾×¼¼½º2000 ¹«·á°­Á : www.officetutor.co.kr/tutor_new/access/daily/index.asp
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