August 2022
Beginner to intermediate
436 pages
9h 43m
Korean
Content preview from SQL로 시작하는 데이터 분석
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33
1
장
SQL을 활용한 분석
데이터베이스와 데이터 스토어는 다이내믹한 기술 발전을 거쳐왔으며,
21
세기 이후 몇 가지
트렌드가 오늘날 데이터 실무자들을 흥분시킬 만한 기술 변화를 이끌어냈습니다. 첫 번째 트렌
드는 인터넷, 모바일 기기, 사물인터넷
Internet
of
Things
의 발전에 따라 엄청나게 증가한 데이터 양
입니다.
2020
년
IDC
7
에서 발표한 바에 따르면
8
2025
년에는 전 세계에 저장되는 데이터 양이
175
제타바이트
zettabyte
에 이를 것이라고 합니다. 이는 상상조차 할 수 없을 정도로 많은 양이며
분석을 위해 데이터베이스에 저장할 수도 없는 양입니다. 오늘날 기업에서 테라바이트 혹은 페
타바이트 수준의 데이터를 다루기는 어려운 일이 아닙니다만
90
년대 이전까지는 이 정도 규모
의 데이터를 처리하기가 불가능했습니다. 두 번째 트렌드는 클라우드의 등장에 따른 데이터 저
장 및 연산 비용 감소입니다. 클라우드에서는 대규모 데이터를 수집하고 저장하기가 더 쉽고
저렴합니다. 컴퓨터 메모리 가격이 내린 덕분에 대용량 데이터를 메모리에 로드해 디스크 읽
기/쓰기 없이 매우 빠르게 연산을 수행하고 그 결과를 반환할 수 있게 됐습니다. 세 번째 트렌
드는 워크로드
workload
를 여러 머신에 나눠서 수행하는 분산 컴퓨팅입니다. 분산 컴퓨팅을 통해 ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.