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[DB] ๋ทฐ(VIEW)

๋ทฐ(VIEW) ๋‹ค๋ฅธ ํ…Œ์ด๋ธ”์„ ๊ธฐ๋ฐ˜์œผ๋กœ ๋งŒ๋“ค์–ด์ง„ ๊ฐ€์ƒ ํ…Œ์ด๋ธ” ๋ฐ์ดํ„ฐ๋ฅผ ์‹ค์ œ๋กœ ์ €์žฅํ•˜์ง€ ์•Š๊ณ  ๋…ผ๋ฆฌ์ ์œผ๋กœ๋งŒ ์กด์žฌ but ์ผ๋ฐ˜ ํ…Œ์ด๋ธ”๊ณผ ๋™์ผํ•œ ๋ฐฉ๋ฒ•์œผ๋กœ ์‚ฌ์šฉ ๋‹ค๋ฅธ ๋ทฐ๋ฅผ ๊ธฐ๋ฐ˜์œผ๋กœ ์ƒˆ๋กœ์šด ๋ทฐ ๋งŒ๋“œ๋Š” ๊ฒƒ๋„ ๊ฐ€๋Šฅ ๋ทฐ ํ†ตํ•ด ๊ธฐ๋ณธ ํ…Œ์ด๋ธ”(๋ทฐ๋ฅผ ๋งŒ๋“œ๋Š” ๊ธฐ๋ฐ˜์ด ๋˜๋Š” ๋ฌผ๋ฆฌ์  ํ…Œ์ด๋ธ”) ๋‚ด์šฉ ์‰ฝ๊ฒŒ ๊ฒ€์ƒ‰ํ•  ์ˆ˜ ์žˆ์ง€๋งŒ, ๊ธฐ๋ณธ ํ…Œ์ด๋ธ”์˜ ๋‚ด์šฉ์„ ๋ณ€ํ™”์‹œํ‚ค๋Š” ์ž‘์—…์€ ์ œํ•œ์  →→ ๊ธฐ๋ณธ ํ…Œ์ด๋ธ”์„ ๋“ค์—ฌ๋‹ค ๋ณผ ์ˆ˜ ์žˆ๋Š” ์ฐฝ์˜ ์—ญํ• ์„ ๋‹ด๋‹น, ๋ฌผ๋ฆฌ์ X, ๋…ผ๋ฆฌ์  ๊ฐ€์ƒ ํ…Œ์ด๋ธ” ๋ทฐ ์ƒ์„ฑ : CREATE VIEW ๋ฌธ CREATE VIEW ๋ทฐ_์ด๋ฆ„[(์†์„ฑ_๋ฆฌ์ŠคํŠธ)] AS SELECT ๋ฌธ [WITH CHECK OPTION]; CREATE VIEW ํ‚ค์›Œ๋“œ์™€ ํ•จ๊ป˜ ์ƒ์„ฑํ•  ๋ทฐ์˜ ์ด๋ฆ„๊ณผ ๋ทฐ๋ฅผ ๊ตฌ์„ฑํ•˜๋Š” ์†์„ฑ ์ด๋ฆ„ ๋‚˜์—ด AS ํ‚ค์›Œ๋“œ์™€ ํ•จ๊ป˜ ๊ธฐ๋ณธ ํ…Œ์ด๋ธ”์— ๋Œ€ํ•œ SELECT ๋ฌธ..

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