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                           II. Basic Usage

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1. mSQL
-------

1.1 ¼Ò°³

mSQL Àº mini SQL À̶ó°íµµ Çϸç, ANSI SQL ±¸¹®À» Áö¿øÇÏ´Â, À̸§±×´ë·Î Å©±â°¡ ÀÛ
Àº µ¥ÀÌŸº£À̽º ¿£ÁøÀÌ´Ù. ÀÌ µ¥ÀÌŸº£À̽º´Â ¸¹Àº À¯´Ð½º Ç÷§Æû¿¡¼­ ÀûÀº ¸Þ¸ð¸®
ÇÏ¿¡¼­ ºü¸¥ ¾ï¼¼½º¸¦ Á¦°øÇϸç, ±× ¸ñÀûÀ¸·Î ¸¸µé¾îÁ³´Ù. mSQL ¹èÆ÷º»¿¡´Â mSQL ¼­
¹ö, Ŭ¶óÀ̾ðÆ® ÇÁ·Î±×·¥µé, Ŭ¶óÀ̾ðÆ® ¼ÒÇÁÆ®¿þ¾î¿¡ ´ëÇÑ C ÇÁ·Î±×·¡¹Ö ÀÎÅÍÆäÀ̽º,
±×¸®°í ¿©·¯°¡Áö ÅøµéÀÌ Æ÷ÇԵǾîÀÖ´Ù.

mSQL Àº °£´ÜÇÑ Å¬¶óÀ̾ðÆ®-¼­¹ö ±¸Á¶·Î µÇ¾îÀÖ´Ù. ¼­¹ö´Â µ¥ÀÌŸº£À̽º¸¦ À¯Áöº¸¼ö
Çϸç, Ŭ¶óÀ̾ðÆ®·ÎºÎÅÍÀÇ ÀÔ·ÂÀ» ¹Þ°í ±×¿¡ ÇØ´çÇÏ´Â ÀÀ´äÀ» ÇÑ´Ù. ±âº»ÀûÀ¸·Î »ç¿ë
ÇؾßÇÒ Å¬¶óÀ̾ðÆ® ÇÁ·Î±×·¥µéÀº ´ÙÀ½°ú °°´Ù.

* msql - mSQL Å͹̳Π¸ð´ÏÅÍ -- Äõ¸®¸¦ ÀÔ·ÂÇÏ´Â ´ëÈ­Çü ÇÁ·Î±×·¥
* relshow - mSQL ±¸¼º ºä¾î -- ¼­¹ö¿¡ ÀÖ´Â µ¥ÀÌŸº£À̽ºÀÇ ¸ñ·Ï°ú µ¥ÀÌŸº£À̽º¿¡
  ÀÖ´Â Å×À̺íÀÇ ¸ñ·ÏÀ» º¸¿©ÁØ´Ù.
* msqldump - mSQL µ¥ÀÌŸº£À̽º ´ýÆÛ -- msql ·Î ·ÎµùµÇ¾îÁö´Â SQL ±¸¹®ÀÇ µ¥ÀÌŸ
  º£À̽º¸¦ ASCII ·Î ÀÛ¼ºÇØÁØ´Ù.

Ãß°¡·Î, mSQL °ü¸®ÀÚÀÏ °æ¿ì¿¡´Â mSQL ¼­¹ö¸¦ °ü¸®ÇÏ´Â msqladmin ÇÁ·Î±×·¥µµ ÀÖ´Ù.
µ¥ÀÌŸº£À̽º¸¦ »õ·Î ¸¸µç´Ù´øÁö, ¾ï¼¼½º Á¦¾î ÆÄÀÏÀ» ´Ù½Ã ·ÎµåÇÏ´Â µîÀÇ °æ¿ì¿¡ »ç
¿ëÇÑ´Ù. ¹°·Ð ¼­¹ö¸¦ ¼Ë´Ù¿î½Ãų °æ¿ì¿¡µµ, µ¥ÀÌŸº£À̽º¸¦ »èÁ¦½Ãų °æ¿ì¿¡µµ »ç¿ë
ÇÑ´Ù.


1.2 mSQL ÀÇ ±âº» »ç¿ë¹ý

1.2.1 ¼­¹ö¿¡ Á¢±ÙÇÏ´Â ¹æ¹ý

mSQL ¼­¹ö¸¦ ¾ï¼¼½ºÇÏ·Á¸é ´ÙÀ½°ú °°ÀÌ ¼öÇàÇÏ¸é µÈ´Ù. À̸¦ ½ÇÇà½ÃÅ°±âÀü¿¡ ¹Ýµå½Ã
msql2d (mSQL ¼­¹ö) °¡ ½ÇÇàÁß¿¡ ÀÖ¾î¾ß ÇÑ´Ù.

$ relshow

 +-----------------+
 |    Databases    |
 +-----------------+
 | w3-msql         |
 | bookmarks       |
 | phpfi           |
 +-----------------+

¸®¸ðÆ®¸Ó½®¿¡ mSQL ¼­¹ö°¡ µ¿ÀÛÁß¿¡ ÀÖÀ» ¶§¿¡´Â ´ÙÀ½°ú °°ÀÌ ÇØ´ç È£½ºÆ®¸íÀ» Àû¾î
ÁÙ ¼öµµ ÀÖ´Ù.

$ relshow -h css35.kr.unisys.com

1.2.2 ¾î¶² µ¥ÀÌŸº£À̽ºµéÀÌ Àִ°¡?

relshow ¸¦ ÀÎÀÚ¾øÀÌ ½ÇÇà½Ãų °æ¿ì¿¡´Â µ¥ÀÌŸº£À̽ºµéÀÇ ¸ñ·ÏÀ» º¸¿©ÁØ´Ù. mSQL Àº
¾²±â, Àб⸦ Á¦ÇÑ ÇÒ ¼ö ÀÖ´Â °£´ÜÇÑ ¾ï¼¼½º Á¦¾î ¸ÞÄ«´ÏÁòÀ» °¡Áö°í ÀÖÀ¸¹Ç·Î ´ÙÀ½
°ú °°ÀÌ ±ÇÇÑÀÌ ÁÖ¾îÁöÁö¾ÊÀº µ¥ÀÌŸº£À̽º¸¦ ¾ï¼¼½ºÇÏ·Á°í ÇÒ °æ¿ì¿¡´Â Á¢±ÙÀ» Çã°¡
ÇÏÁö¾Ê´Â´Ù.

$ relshow phpfi
Access to database denied

1.2.3 »õ·Î¿î µ¥ÀÌŸº£À̽º ¸¸µé±â

¿À·ÎÁö DBA(DataBase Administrator)¸¸ÀÌ mSQL ¿¡ µ¥ÀÌŸº£À̽º¸¦ Ãß°¡Çϰųª »èÁ¦ÇÒ
¼ö ÀÖ´Ù.(DBA ´Â mSQL À» ¼³Ä¡ÇÒ ¶§ Á¤ÀÇÇØÁØ´Ù.) ÀÌ µÎ°¡Áö °æ¿ì´Â msqladmin ¸í·É
À¸·Î ½ÇÇàµÈ´Ù.

$ msqladmin create linux
$ msqladmin drop linux

»õ·Î¿î µ¥ÀÌŸº£À̽º¸¦ ¸¸µé¾ú´Ù¸é msql.acl ÆÄÀÏ¿¡ ¾ï¼¼½º ŸÀÔÀ» Á¤ÀÇÇØÁÙ ¼ö ÀÖ´Ù.
I ÀåÀÇ ¼Â¾÷ºÎºÐÀ» Âü°íÇϱ⠹ٶõ´Ù.

DBA ´Â ´ÙÀ½°ú °°ÀÌ msqladmin ¸í·ÉÀ¸·Î µ¥ÀÌŸº£À̽º¸¦ ¼Ë´Ù¿î½ÃÅ°°Å³ª, ¾ï¼¼½º Á¦
¾îÆÄÀÏÀ» ´Ù½Ã ·ÎµùÇÒ ¼ö ÀÖ´Ù.

$ msqladmin shutdown
$ msqladmin reload

1.2.4 µ¥ÀÌŸº£À̽º ±¸¼º »ìÇDZâ

relshow ¸í·ÉÀ» ½ÇÇàÇÒ ¶§ µ¥ÀÌŸº£À̽º¸íÀ» Àû¾îÁÖ¸é µ¥ÀÌŸº£À̽º¿¡ Æ÷ÇԵǾîÀÖ´Â
¸ðµç Å×À̺íÀÌ ³ªÅ¸³ª°Ô µÈ´Ù. ¶Ç µ¥ÀÌŸº£À̽º¸í°ú Å×À̺í¸íÀ» Àû¾îÁÖ¸é ±× Å×À̺í
ÀÇ ±¸¼ºÀ» ³ªÅ¸³½´Ù.

$ relshow w3-msql

Database = w3-msql

 +---------------------+
 |       Table         |
 +---------------------+
 | namespaces          |
 | areas               |
 | area_acl            |
 | users               |
 | perms               |
 | group_members       |
 | groups              |
 | group_admin         |
 +---------------------+

$ relshow w3-msql namespaces

Database = w3-msql
Table    = namespaces

+-----------------+----------+--------+----------+--------------+
|     Field       |   Type   | Length | Not Null | Unique Index |
+-----------------+----------+--------+----------+--------------+
| namespace       | char     | 50     | N        | N/A          |
| descr           | char     | 50     | N        | N/A          |
+-----------------+----------+--------+----------+--------------+

1.2.5 µ¥ÀÌŸº£À̽ºÀÇ Á¶Á¤

msql Ŭ¶óÀ̾ðÆ® ÇÁ·Î±×·¥Àº ƯÁ¤ µ¥ÀÌŸº£À̽º¿¡ ´ëÇØ SQL ±¸¹®À» Á÷Á¢ ÀÔ·ÂÇÒ ¼ö
ÀÖ°Ô ÇØÁÖ´Â ´ëÈ­Çü ÇÁ·Î±×·¥ÀÌ´Ù.

¾Æ·¡¿Í °°ÀÌ SQL ±¸¹®À¸·Î µÇ¾îÀÖ´Â ÆÄÀÏÀ» ¸¸µé°í µ¥ÀÌŸº£À̽º¿¡ Å×À̺íÀ» ¸¸µé°í
µ¥ÀÌŸµéÀ» ÀÔ·ÂÇÒ ¼ö ÀÖ´Ù.

-[linuxer.msql]----------------------------------------------------------------
CREATE TABLE linuxer (
       name            char(8),
       id              char(8),
       telephone       char(13),
       job             char(20),
       age             char(2)
)\g

INSERT INTO linuxer VALUES ('À¯Çü¸ñ','¿¥ºê¸®¿À','015-298-5000','LG Á¤º¸Åë½Å',
'29')\g
INSERT INTO linuxer VALUES ('¹ÚÀçÈ­','kingcrab','015-8301-8000','Çѱ¹À¯´Ï½Ã½º'
,'28')\g
INSERT INTO linuxer VALUES ('·ù°æÈ£','lovest','781-6000','Çѱ¹ IBM','28')\g
INSERT INTO linuxer VALUES ('À̸¸¿ë','geoman','015-966-2000','³ª¿ì¸®´ª½ºµ¿½Ã
»ð','27')\g
INSERT INTO linuxer VALUES ('ÀÌÁ¤ÈÆ','facultas','012-326-8000','¿¬¼¼´ë Àü±â°ø
Çаú','25')\g
------------------------------------------------------------------------------

$ msql linux < linuxer.msql
mSQL >     ->
Query OK.  1 row(s) modified or retrieved.
mSQL >
Query OK.  1 row(s) modified or retrieved.
mSQL >
Query OK.  1 row(s) modified or retrieved.
mSQL >
Query OK.  1 row(s) modified or retrieved.
mSQL >
Query OK.  1 row(s) modified or retrieved.
mSQL >
Bye!

$ msql linux

Welcome to the miniSQL monitor.  Type \h for help.

mSQL > \h

MiniSQL Help!

The following commands are available :-

       \q      Quit
       \g      Go (Send query to database)
       \e      Edit (Edit previous query)
       \p      Print (Print the query buffer)

mSQL > select name, id from linuxer
   -> \g

Query OK.  5 row(s) modified or retrieved.

+----------+----------+
| name     | id       |
+----------+----------+
| À¯Çü¸ñ   | ¿¥ºê¸®¿À |
| ¹ÚÀçÈ­   | kingcrab |
| ·ù°æÈ£   | lovest   |
| À̸¸¿ë   | geoman   |
| ÀÌÁ¤ÈÆ   | facultas |
+----------+----------+

msql Ŭ¶óÀ̾ðÆ®´Â \g ³ª \q ¸¦ ÀÔ·ÂÇϱâ Àü±îÁö »ç¿ëÀÚ°¡ ÀÔ·ÂÇÑ ³»¿ëµéÀ» ¸ðµÎ ¹ö
ÆÛ¿¡ ³Ö¾î³õ°í ±â´Ù¸°´Ù. ¸Å¹ø ¿£ÅÍÅ°¸¦ Ä¥¶§¸¶´Ù msql Àº "->" ¶ó´Â »õÇÁ·ÒÇÁÆ®¸¦
³»³õ°í ±×´ÙÀ½ÀÇ ÀÔ·ÂÀ» ±â´Ù¸®¸ç, À̶§ \g ¸¦ ÀÔ·ÂÇÏ¸é ¿©Áö²¯ ÀÔ·ÂÇÑ SQL ±¸¹®µéÀÌ
½ÇÇàµÈ´Ù. \q ¸¦ ÀÔ·ÂÇϸé ÀÔ·ÂÀÌ Ãë¼ÒµÇ°í msql À» ºüÁ®³ª¿Â´Ù.

1.2.6 ÁÖ¼®

msql Ŭ¶óÀ̾ðÆ®¿¡¼­ # Ç¥½Ã´Â ÁÖ¼®À» ³ªÅ¸³½´Ù. # µÚ¿¡ ¿À´Â ¸ðµç ¹®ÀÚµéÀ» msql Àº
¹«½ÃÇعö¸®°Ô µÈ´Ù. ±×·¯¹Ç·Î, Å×À̺í¸íÀ̳ª µ¥ÀÌŸµéÀ» ´Ù·ç´Â °÷¿¡´Â # ¹®ÀÚ´Â ¾²
Áö¾Ê¾Æ¾ß ÇÑ´Ù.

1.2.7 µ¥ÀÌŸº£À̽ºÀÇ ±¸¼ºÀ» Á¤ÀÇÇϰųª º¯°æÇϱâ

msql Ŭ¶óÀ̾ðÆ®¸¦ ÀÌ¿ëÇؼ­ ¼­¹ö¿¡ µ¥ÀÌŸº£À̽ºÀÇ ±¸¼ºÀ» Á¤ÀÇÇϰųª º¯°æÇÒ ¼ö ÀÖ
´Ù. ¿¹¸¦ µé¾î ÅÖºó µ¥ÀÌŸº£À̽º company ¸¦ °¡Áö°í ´ÙÀ½°ú °°ÀÌ ÀÔ·ÂÇغ¸ÀÚ. ¸ÕÀú
company µ¥ÀÌŸº£À̽º¸¦ »ý¼ºÇÏ¿´´Ù°í °¡Á¤ÇÑ´Ù.

$ msql company
mSQL > CREATE TABLE project (
    ->          pname           char(15),
    ->          pnumber         char(5),
    ->          plocation       char(10),
    ->          dnum            char(1)
    -> ) \g

Query OK.  1 row(s) modified or retrieved.

mSQL > CREATE TABLE dept_locations (
    ->          dnumber         char(1) not null,
    ->          dlocation       char(10) not null
    -> ) \g

Query OK.  1 row(s) modified or retrieved.

¿¡·¯°¡ ÀÖÀ»¶§¸¶´Ù ¾î¶² ¿¡·¯ÀÎÁö¸¦ ³ªÅ¸³»Áֱ⠶§¹®¿¡ ÀÌ·¸°Ô ÀÔ·ÂÇÏ´Â ¹æ¹ýÀÌ Ã³À½
¿¡´Â ±¦ÂúÀº ¹æ¹ýÀÌ´Ù. À§¿¡¼­¿Í °°ÀÌ company-schema.msql ÆÄÀÏÀ» ¸¸µé¾î ¸®´ÙÀÌ·º
¼ÇÀ» ½á msql ¿¡ Àü´Þ½ÃÄѵµ µÈ´Ù. ¸¸ÀÏ ÀÌ·¸°Ô ÇßÀ» ¶§ ¿¡·¯°¡ ÀÖÀ¸¸é ´Ù½Ã ÆÄÀÏÀ»
¼öÁ¤ÇÏ°í Àç ½ÇÇàÇÏ¸é µÈ´Ù. À§ÀÇ ¿¹¿¡¼­ Ȥ ±âÁ¸¿¡ project ¶ó´Â Å×À̺íÀÌ Á¸ÀçÇϸé
¸ÕÀú ÀÌÀüÀÇ project ¶õ Å×À̺íÀ» »èÁ¦ÇÏ°í ´Ù½Ã »ý¼º½ÃÄÑ¾ß ÇÒ °æ¿ì°¡ ÀÖ´Ù. À̸¦
À§ÇØ ´ÙÀ½°ú °°ÀÌ ÀϹÝÀûÀ¸·Î ½áÁÖ´Â °æ¿ì°¡ ¸¹´Ù.

DROP TABLE project \g
CREATE TABLE project (
       pname           char(15),
       pnumber         char(5),
       plocation       char(10),
       dnum            char(1)
) \g

ÀÌ°ÍÀÌ Ã³À½ ½ÇÇàµÉ¶§ ¾Æ¸¶µµ ´ÙÀ½°ú °°Àº ¿¡·¯¸Þ½ÃÁö°¡ ³ª¿Ã¼öµµ ÀÖ´Ù.

ERROR : Unknown table "project"

ÀÌ ¿¡·¯´Â ±âÁ¸¿¡ project ¶ó´Â Å×À̺íÀÌ ¾ø±â¶§¹®¿¡ »èÁ¦ÇÒ Å×À̺íÀÌ ¾ø´Ù´Â ¿¡·¯ÀÌ
±â¶§¹®¿¡ ½Å°æ¾²Áö¾Ê¾Æµµ µÈ´Ù. ÇÏÁö¸¸, ÀÏ´Ü ¿¡·¯°¡ ¹ß»ýÇÏ¸é ±×´ÙÀ½ ±¸¹®Àº ¸ðµÎ
½ÇÇàµÇÁö¾Ê±â ¶§¹®¿¡ ¸¸ÀÏ ÀÌ°æ¿ì¿¡ ù¹ø° ¶óÀÎÀÇ ³¡ºÎºÐ¿¡ \g °¡ ¾ø´Ù¸é ±× ÀÌÈÄÀÇ
¸í·ÉµéÀº ¸ðµÎ ¹«½Ã°¡ µÇ¾î¹ö¸°´Ù. ±×·¯¹Ç·Î, DROP ¹®À» ¾µ °æ¿ì¿¡´Â Ç×»ó ¸¶Áö¸·ºÎ
ºÐ¿¡ \g ¸¦ ºÙÀ̱⠹ٶõ´Ù. ÀϹÝÀûÀ¸·Î ¸ðµç mSQL ¸í·ÉµÚ¿¡ \g ¸¦ ºÙÀÌ´Â °ÍÀÌ ÁÁÀº
½À°üÀÌ´Ù.

1.2.8 µ¥ÀÌŸº£À̽º ÀúÀåÇϱâ

mSQL Àº ÇöÀç µ¥ÀÌŸº£À̽º¸¦ ¸ðµÎ SQL ¹®À¸·Î ¹Ù²ãÁÖ´Â msqldump ¶ó´Â ¸í·ÉÀ» Á¦°ø
ÇÑ´Ù. msqldump ·Î ¸¸µé¾îÁø ÆÄÀÏ·Î ´Ù½Ã ÇöÀçÀÇ µ¥ÀÌŸº£À̽º¸¦ Àç»ý¼º½Ãų ¼ö ÀÖ
´Ù.

$ msqldump company > company-dump.msql

1.2.9 ½ºÅ©¸³Æ® ¸¸µé±â

À§ÀÇ ³»¿ëÀ» Çѹø¿¡ ½ÇÇàÇÒ ¼ö ÀÖ´Â ½ºÅ©¸³Æ®¸¦ ÀÛ¼ºÇÏ¿© »ç¿ëÇÒ ¼öµµ ÀÖ´Ù. ¾Æ·¡¿Í
°°ÀÌ ¸¸µéÀÚ.

-[makecompany]-----------------------------------------------------------------
#!/bin/bash


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