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        <title>soultree</title>
        <link>https://soultree.inblog.io</link>
        <description>🙌🏻 블로그에 방문해 주셔서 감사합니다. :) 🙌🏻[ Github ]✅ &quot;https://github.com/SoulTree-Lovers&quot; ✅</description>
        <pubDate>Mon, 08 Apr 2024 06:31:08 GMT</pubDate>
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        <lastBuildDate>Thu, 26 Sep 2024 23:22:10 GMT</lastBuildDate>
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        <item>
              <title>[Spring] Interceptor를 통한 API 보안(인증) 적용</title>
              <link>https://soultree.inblog.io/spring-interceptor를-통한-api-보안인증-적용-30371</link>
              <description>Spring Framework에서 API에 대한 보안을 적용하고자 한다. 보통, 스웨거 및 로그인 같은 보안이 필요하지 않은 API를 제외한 다른 API에 대해 보안을 적용한다.여러가지 방법 중, Interceptor에서 보안(인증)을 적용하는 방법이 있다.</description>
              <pubDate>Thu, 26 Sep 2024 23:28:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/spring-interceptor를-통한-api-보안인증-적용-30371</guid>
              <category>Spring</category>
              <author>Hi</author>
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            </item><item>
              <title>[AWS] AWS 리소스 삭제하기</title>
              <link>https://soultree.inblog.io/aws-aws-리소스-삭제하기-30310</link>
              <description>삭제 순서는 생성 순서와 반대로 하면 된다. 나중에 생성한 것부터 차례대로 삭제하면 된다.  </description>
              <pubDate>Thu, 26 Sep 2024 05:17:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/aws-aws-리소스-삭제하기-30310</guid>
              <category>AWS</category>
              <author>Hi</author>
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            </item><item>
              <title>[AWS] Amazon Route 53으로 도메인 서비스 구축하는 법</title>
              <link>https://soultree.inblog.io/aws-amazon-route-53으로-도메인-서비스-구축하는-법-30269</link>
              <description>AWS Route 53 서비스를 통해 Spring Boot 웹 애플리케이션의 도메인 서비스를 구축하는 법을 알아보자. </description>
              <pubDate>Wed, 25 Sep 2024 04:27:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/aws-amazon-route-53으로-도메인-서비스-구축하는-법-30269</guid>
              <category>AWS</category>
              <author>Hi</author>
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            </item><item>
              <title>[AWS] Xshell과 Xftp를 활용하여 Windows에서 Amazon EC2 원격 로그인 후 Spring Boot 서버 올리기</title>
              <link>https://soultree.inblog.io/aws-xshell과-xftp를-활용하여-windows에서-amazon-ec2-원격-로그인-후-spring-boot-서버-올리기-29963</link>
              <description>Xshell과 Xftp를 활용하여 Windows에서 Amazon EC2 원격 로그인 후 Spring Boot 서버를 올려보자. 그리고 SSH를 통해 EC2에 로그인을 하는 방법을 알아보자. </description>
              <pubDate>Thu, 19 Sep 2024 23:36:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/aws-xshell과-xftp를-활용하여-windows에서-amazon-ec2-원격-로그인-후-spring-boot-서버-올리기-29963</guid>
              <category>AWS</category><category>Spring</category>
              <author>Hi</author>
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            </item><item>
              <title>[AWS] Amazon EC2가 뭘까? </title>
              <link>https://soultree.inblog.io/aws-amazon-ec2가-뭘까--29890</link>
              <description>Amazon EC2(Elastic Compute Cloud)는 프로세서, 스토리지, 네트워킹, OS 및 구매 모델의 다양한 옵션을 제공하며, 클라우드에서 안전하고 크기 조정이 가능한 컴퓨팅을 제공한다.</description>
              <pubDate>Thu, 19 Sep 2024 00:00:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/aws-amazon-ec2가-뭘까--29890</guid>
              <category>AWS</category>
              <author>Hi</author>
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            </item><item>
              <title>[AWS] Amazon 컨테이너 서비스 이해 (ECR, ECS)</title>
              <link>https://soultree.inblog.io/aws-amazon-컨테이너-서비스-이해-ecr-ecs-29344</link>
              <description>컨테이너 서비스란 소프트웨어 응용 프로그램을 실행하기 위한 가상화 기술이다. AWS는 이러한 컨테이너 서비스를 편리하게 사용할 수 있도록 환경을 제공해준다. </description>
              <pubDate>Fri, 13 Sep 2024 00:42:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/aws-amazon-컨테이너-서비스-이해-ecr-ecs-29344</guid>
              <category>AWS</category>
              <author>Hi</author>
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            </item><item>
              <title>[SQLD] 반정규화(De-Normalization) | PART 1</title>
              <link>https://soultree.inblog.io/sqld-반정규화denormalization-part-1-29292</link>
              <description>데이터의 조회 성능을 향상시키기 위해 데이터의 중복을 허용하거나 데이터를 그룹핑하는 과정이다. 주의해야 할 점은 조회 성능은 향상될 수 있으나 입력, 수정, 삭제 성능은 저하될 가능성이 높고 데이터 정합성 문제가 발생할 수 있다.  반정규화는 정규화가 끝난 후 거치게 되며 정규화와 마찬가지로 특정 방식이 존재한다.</description>
              <pubDate>Thu, 12 Sep 2024 05:34:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sqld-반정규화denormalization-part-1-29292</guid>
              <category>SQLD</category><category>Oracle</category><category>SQL</category>
              <author>Hi</author>
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            </item><item>
              <title>[SQLD] 정규화(Nomalization) | PART 1</title>
              <link>https://soultree.inblog.io/sqld-정규화nomalization-part-1-29198</link>
              <description>데이터 정합성(데이터의 정확성과 일관성을 유지하고 보장하는 것)을 위해 엔터티를 작은 단위로 분리하는 과정이다. 정규화를 할 경우 데이터 조회 성능은 처리 조건에 따라 향상되는 경우도 있고 저하되는 경우도 있지만 입력, 수정, 삭제 성능은 일반적으로 향상된다고 볼 수 있다. 하지만 그렇다고 무작정 정규화를 통해 엔터티를 분리해서는 안 된다. 엔터티를 분리하기 위한 조건이 따로 존재한다.</description>
              <pubDate>Wed, 11 Sep 2024 05:32:54 GMT</pubDate>
              <guid>https://soultree.inblog.io/sqld-정규화nomalization-part-1-29198</guid>
              <category>SQL</category><category>SQLD</category><category>Oracle</category>
              <author>Hi</author>
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            </item><item>
              <title>[SQLD] 식별자(Identifiers) | PART 1</title>
              <link>https://soultree.inblog.io/sqld-식별자identifiers-part-1-29078</link>
              <description>식별자는 각각의 인스턴스를 구별할 수 있게 해주는 역할이다. 학번, 군번, 사번 등이 이에 해당된다.</description>
              <pubDate>Tue, 10 Sep 2024 04:07:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sqld-식별자identifiers-part-1-29078</guid>
              <category>SQLD</category><category>Oracle</category><category>SQL</category>
              <author>Hi</author>
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            </item><item>
              <title>[SQLD] 관계(Relationship) | PART 1</title>
              <link>https://soultree.inblog.io/sqld-관계relationship-part-1-28957</link>
              <description>관계는 엔터티 간 관계를 의미하며, 엔터티 간 어떠한 연관성이 있는지 여러 타입으로 나눌 수 있다. 존재 관계와 행위 관계로 구분할 수 있으며, 각 관계 차수는 1:1, 1:M, N:M으로 나눠진다.</description>
              <pubDate>Mon, 09 Sep 2024 00:38:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sqld-관계relationship-part-1-28957</guid>
              <category>SQLD</category><category>Oracle</category><category>SQL</category>
              <author>Hi</author>
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            </item><item>
              <title>[SQLD] 속성(Attribute) | PART 1</title>
              <link>https://soultree.inblog.io/sqld-속성attribute-part-1-28816</link>
              <description>속성은 의미상 더 이상 쪼개지지 않는 레벨이어야 하고, 프로세스에 필요한 내용이어야 한다.</description>
              <pubDate>Thu, 05 Sep 2024 23:29:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sqld-속성attribute-part-1-28816</guid>
              <category>SQLD</category><category>Oracle</category><category>SQL</category>
              <author>Hi</author>
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            </item><item>
              <title>[SQLD] 엔터티(Entity) | PART 1 </title>
              <link>https://soultree.inblog.io/sqld-엔터티entity-28766</link>
              <description>엔터티는 식별이 가능한 객체이다. 주로 정보를 저장하기 위해 사용한다. SQLD에서 나오는 엔터티의 이론을 공부해보자.</description>
              <pubDate>Wed, 04 Sep 2024 23:22:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sqld-엔터티entity-28766</guid>
              <category>SQLD</category><category>Oracle</category><category>SQL</category>
              <author>Hi</author>
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            </item><item>
              <title>[SQLD] 모델링(Modeling) | PART 1</title>
              <link>https://soultree.inblog.io/sqld-모델링modeling-part-1-28687</link>
              <description>데이터베이스 모델링은 ‘현실 세계를 단순화하여 표현하는 기법’이다.</description>
              <pubDate>Wed, 04 Sep 2024 04:17:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sqld-모델링modeling-part-1-28687</guid>
              <category>SQL</category><category>SQLD</category><category>Oracle</category>
              <author>Hi</author>
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            </item><item>
              <title>[JWT] JWT 인증 방식을 더 자세히 알아보자</title>
              <link>https://soultree.inblog.io/jwt-인증-방식을-더-자세히-알아보자-28552</link>
              <description>JWT(Json Web Token)를 가지고 클라이언트와 서버는 어떻게 주고 받는지, 그리고 무엇을 보고 검증하는 지 알아보자</description>
              <pubDate>Tue, 03 Sep 2024 00:56:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/jwt-인증-방식을-더-자세히-알아보자-28552</guid>
              <category>Java</category><category>Spring</category><category>Server</category><category>JWT</category>
              <author>Hi</author>
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            </item><item>
              <title>[JWT] JWT의 모든 것</title>
              <link>https://soultree.inblog.io/jwt의-모든-것-28551</link>
              <description>Json Web Token은 웹 표준으로써, 데이터의 JSON 객체를 사용하여 가볍고 자가 수용적인 방식으로 정보를 안전하게 전달할 수 있도록 설계된 토큰 기반의 인증 방식이다.</description>
              <pubDate>Tue, 03 Sep 2024 00:52:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/jwt의-모든-것-28551</guid>
              <category>Java</category><category>Spring</category><category>Server</category><category>JWT</category>
              <author>Hi</author>
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            </item><item>
              <title>[SQL] PIVOT과 UNPIVOT</title>
              <link>https://soultree.inblog.io/sql-pivot과-unpivot-28408</link>
              <description>먼저, 데이터의 구조를 알아보고, Oracle에서 사용하는 `PIVOT`과 `UNPIVOT`에 대해 알아보자.데이터의 구조는 `Long Data`(Tidy Data)와 `Wide Data`(Cross Table)가 있다. 일반적으로 우리가 잘 알고 있는 RDB는 Long Data이며, 그것을 90도 돌린 것이 Wide Data라고 생각하면 된다. PIVOT은 Long Data를 Wide Data로 바꾸는 것이며, UNPIVOT은 반대로 Wide Data를 Long Data로 바꾸는 것이다.</description>
              <pubDate>Mon, 02 Sep 2024 00:37:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-pivot과-unpivot-28408</guid>
              <category>SQL</category><category>Oracle</category>
              <author>Hi</author>
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            </item><item>
              <title>[SQL] DCL의 모든 것</title>
              <link>https://soultree.inblog.io/sql-dcl의-모든-것-27803</link>
              <description>DCL은 Data Control Language의 약자로, &apos;USER&apos;를 생성하고, &apos;USER&apos;에게 데이터를 컨트롤할 수 있는 권한을 부여하거나 회수하는 명령어이다.`CREATE USER`, `ALTER USER`, `DROP USER` 등이 있다.</description>
              <pubDate>Wed, 28 Aug 2024 07:25:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-dcl의-모든-것-27803</guid>
              <category>SQL</category><category>Oracle</category>
              <author>Hi</author>
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            </item><item>
              <title>[SQL] DDL의 모든 것</title>
              <link>https://soultree.inblog.io/sql-ddl의-모든-것-27593</link>
              <description>DDL은 Data Definition Language의 약자로, 데이터를 정의하는 명령어이다. DDL은 CREATE, ALTER, DROP, RENAME, TRUNCATE가 있다.</description>
              <pubDate>Tue, 27 Aug 2024 02:09:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-ddl의-모든-것-27593</guid>
              <category>Oracle</category><category>SQL</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-08-27T02%3A10%3A03.904Z-f5fad7cb-40a4-4dba-89ba-2ed60097f765&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[SQL] TCL의 모든 것</title>
              <link>https://soultree.inblog.io/sql-tcl의-모든--27526</link>
              <description>TCL은 Transaction Control Language의 약자이다. 트랜잭션을 제어하는 명령어로 COMMIT, ROLLBACK, SAVEPOINT가 있다. 일부에서는 TCL을 DCL로 분류하기도 한다.*트랜잭션이란 쪼개질 수 없는 업무처리의 단위이다.</description>
              <pubDate>Mon, 26 Aug 2024 02:32:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-tcl의-모든--27526</guid>
              <category>SQL</category><category>Oracle</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-08-26T02%3A32%3A40.327Z-f0b110d4-573c-462f-a465-7445b6f2395a&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[SQL] DML의 모든 것</title>
              <link>https://soultree.inblog.io/sql-dml의-모든-것-27295</link>
              <description>DML은 Data Manipulation Language의 약자로, DDL에서 정의한 대로 데이터를 입력하고(INSERT), 수정하고(UPDATE), 삭제하는(DELETE) 명령어이다.SELECT를 DML이라고 하는 블로그나 게시글이 간혹 있는데, SELECT는 DML이 아니라 DQL(Data Query Language)로 따로 분류한다. </description>
              <pubDate>Thu, 22 Aug 2024 04:03:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-dml의-모든-것-27295</guid>
              <category>Oracle</category><category>SQL</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-08-22T04%3A04%3A53.210Z-bfc69115-6a8b-44f2-914a-cdc3238c35b1&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[SQL] TOP-N 쿼리 (ROWNUM)</title>
              <link>https://soultree.inblog.io/sql-topn-쿼리-rownum-27055</link>
              <description>Oracle에서는 MySQL과는 다르게 `LIMIT`을 사용할 수 없다. 따라서, `ROWNUM`을 통해 다른 방법으로 TOP N개를 추출해야 한다.주로, 빌보드 차트 TOP 100과 같이 위에서 N개를 추출할 때 사용한다.</description>
              <pubDate>Tue, 20 Aug 2024 01:43:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-topn-쿼리-rownum-27055</guid>
              <category>SQL</category><category>Oracle</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-08-20T01%3A42%3A45.463Z-52f233d6-0312-4245-ba67-50308df4303f&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[SQL] 윈도우(WINDOW) 함수</title>
              <link>https://soultree.inblog.io/sql-윈도우window-함수-26871</link>
              <description>Oracle에서 윈도우 함수(WINDOW FUNCTION)는 OVER 키워드와 함께 사용되며 역할에 따라 다음과 같이 나눌 수 있다.(순위 함수, 집계 함수, 행 순서 함수, 비율 함수)</description>
              <pubDate>Sun, 18 Aug 2024 23:59:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-윈도우window-함수-26871</guid>
              <category>Oracle</category><category>SQL</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-08-19T00%3A00%3A43.005Z-263856e5-07f6-452f-9602-e33de9094ae1&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[SQL] 그룹함수</title>
              <link>https://soultree.inblog.io/sql-그룹함수-26473</link>
              <description>Oracle의 그룹함수를 알아보자. 그룹함수는 데이터를 GROUP BY 하여 나타낼 수 있는 데이터를 구하는 함수이다. 집계 함수와 소계(총계) 함수로 나눌 수 있다. 소계 관련 함수로는 ROLLUP, CUBE, GROUPING SETS, GROUPING 등이 있다.</description>
              <pubDate>Tue, 13 Aug 2024 23:27:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-그룹함수-26473</guid>
              <category>Oracle</category><category>SQL</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-08-13T23%3A27%3A47.258Z-c4b5982a-5953-4de8-9082-81c9a00cc56e&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[SQL] 서브쿼리 (SUBQUERY)</title>
              <link>https://soultree.inblog.io/sql-서브쿼리-subquery-26193</link>
              <description>서브쿼리(Subquery)는 하나의 쿼리 안에 존재하는 또 다른 쿼리이다.</description>
              <pubDate>Mon, 12 Aug 2024 07:19:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-서브쿼리-subquery-26193</guid>
              <category>Oracle</category><category>SQL</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-08-12T07%3A19%3A52.652Z-eeb12e88-8573-4cce-9c38-fcdc827c67cc&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[SQL] Oracle에서 정렬하는 법 (ORDER BY절)</title>
              <link>https://soultree.inblog.io/sql-oracle에서-정렬하는-법-order-by절-25751</link>
              <description>ORDER BY 절은 SELECT 문에서 맨 마지막에 수행되며, 선택한 데이터를 정렬하기 위해 사용한다. 정렬 기준이 되는 값들은 SELECT 절에 포함되어 있지 않아도 된다.</description>
              <pubDate>Thu, 08 Aug 2024 01:55:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-oracle에서-정렬하는-법-order-by절-25751</guid>
              <category>SQL</category><category>Oracle</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-08-08T02%3A06%3A54.972Z-95960853-b897-4a9f-b908-a111ddaddde3&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[SQL] Oracle에서 GROUP BY 절과 HAVING </title>
              <link>https://soultree.inblog.io/sql-group-by-절과-having--25691</link>
              <description>GROUP BY는 단어 그대로 특정 속성을 기준으로 그룹화하는 절이다. 하나의 속성으로 그룹화할 수도 있고, 여러 속성으로 그룹화할 수도 있다.</description>
              <pubDate>Wed, 07 Aug 2024 05:58:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-group-by-절과-having--25691</guid>
              <category>SQL</category><category>Oracle</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-08-07T05%3A59%3A27.444Z-586f8887-61cd-475a-86ad-5d6d04791d92&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[SQL] WHERE 절과 여러가지 연산자</title>
              <link>https://soultree.inblog.io/sql-where-절과-여러가지-연산자-25536</link>
              <description>INSERT 를 제외한 DML 문을 수행할 때 원하는 데이터만 골라 수행할 수 있도록 해주는 구문이다. </description>
              <pubDate>Tue, 06 Aug 2024 06:31:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-where-절과-여러가지-연산자-25536</guid>
              <category>SQL</category><category>Oracle</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-08-06T06%3A31%3A52.751Z-96b7cf39-da7f-44de-beb3-6cda4492b5e9&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[SQL] 여러가지 NULL 관련 함수 </title>
              <link>https://soultree.inblog.io/sql-여러가지-null-관련-함수--25253</link>
              <description>데이터베이스에서 기본적으로 제공해주는 NULL 관련 함수들이다.</description>
              <pubDate>Mon, 05 Aug 2024 01:28:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-여러가지-null-관련-함수--25253</guid>
              <category>SQL</category><category>Oracle</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-08-05T01%3A28%3A47.836Z-458ccaae-89c9-4e82-a71e-9c075649e3b2&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[SQL] 여러가지 변환 함수</title>
              <link>https://soultree.inblog.io/sql-여러가지-변환-함수-25132</link>
              <description>데이터베이스에서 기본적으로 제공해주는 변환 함수들이다.</description>
              <pubDate>Fri, 02 Aug 2024 07:53:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-여러가지-변환-함수-25132</guid>
              <category>SQL</category><category>Oracle</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-08-02T07%3A54%3A23.597Z-3688b83e-9001-4b3b-91a4-e3565e003800&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[SQL] 여러가지 날짜 함수</title>
              <link>https://soultree.inblog.io/sql-여러가지-날짜-함수-25064</link>
              <description>데이터베이스에서 기본적으로 제공해주는 날짜 함수들이다.</description>
              <pubDate>Thu, 01 Aug 2024 04:50:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-여러가지-날짜-함수-25064</guid>
              <category>SQL</category><category>Oracle</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-08-01T04%3A50%3A28.735Z-cc22b799-95e1-48c4-b2cb-adb3d9ffb7d6&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[SQL] 여러가지 숫자 함수</title>
              <link>https://soultree.inblog.io/sql-여러가지-숫자-함수-25025</link>
              <description>데이터베이스에서 기본적으로 제공해주는 숫자 함수들이다.</description>
              <pubDate>Wed, 31 Jul 2024 05:53:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-여러가지-숫자-함수-25025</guid>
              <category>SQL</category><category>Oracle</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-07-31T05%3A54%3A55.067Z-a4218ac0-9d44-493d-a587-61fc7be3162f&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[SQL] 여러가지 문자 함수</title>
              <link>https://soultree.inblog.io/sql-여러가지-문자-함수-24962</link>
              <description>데이터베이스에서 기본적으로 제공해주는 문자 함수들이다.</description>
              <pubDate>Tue, 30 Jul 2024 07:45:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sql-여러가지-문자-함수-24962</guid>
              <category>SQL</category><category>Oracle</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-07-30T07%3A47%3A31.276Z-33c8e605-a59a-4888-bfb0-e0683c559935&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[SQL] SELECT문</title>
              <link>https://soultree.inblog.io/select문-24961</link>
              <description>저장되어 있는 데이터를 조회하고자 할 때 사용하는 명령어</description>
              <pubDate>Tue, 30 Jul 2024 07:42:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/select문-24961</guid>
              <category>Oracle</category><category>SQL</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-07-30T07%3A43%3A59.471Z-2d9c52f5-ecef-4d76-9c9d-bdd52e88a84e&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[Spring] ControllerAdvice와 RestControllerAdvice</title>
              <link>https://soultree.inblog.io/controlleradvice-21403</link>
              <description>ControllerAdvice와 RestControllerAdvice를 통해 예외를 전역적으로 처리해보자!</description>
              <pubDate>Tue, 04 Jun 2024 02:29:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/controlleradvice-21403</guid>
              <category>Spring</category>
              <author>Hi</author>
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            </item><item>
              <title>[Spring] Lombok에 대해 알아보자</title>
              <link>https://soultree.inblog.io/lombok에-대해-알아보자-21393</link>
              <description>Spring 애플리케이션을 개발할 때 빠질 수 없는 lombok에 대해 알아보자!</description>
              <pubDate>Mon, 03 Jun 2024 04:37:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/lombok에-대해-알아보자-21393</guid>
              <category>Spring</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-06-03T14%3A10%3A44.497Z-befccd07-8309-4c27-8c26-a00df2aadfb6&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[Spring] JPA 테이블 생성 오류 - via JDBC You have an error in your SQL syntax</title>
              <link>https://soultree.inblog.io/spring-jpa-테이블-생성-오류-20676</link>
              <description>via JDBC [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near / [Failed to open the referenced table &apos;member&apos;] 에러 원인 및 해결 방법</description>
              <pubDate>Sat, 25 May 2024 11:59:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/spring-jpa-테이블-생성-오류-20676</guid>
              <category>Spring</category><category>Java</category>
              <author>Hi</author>
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            </item><item>
              <title>[SA] DDD (Domain Driven Design)</title>
              <link>https://soultree.inblog.io/sa-ddd-domain-driven-design-20237</link>
              <description>도메인 주도 설계에 대해 알아보자.</description>
              <pubDate>Wed, 15 May 2024 14:45:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/sa-ddd-domain-driven-design-20237</guid>
              <category>Software Architecture</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-05-15T14%3A59%3A13.403Z-881081dc-19bd-4082-b1a3-e256d06becc3&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[DB] 기본 키를 대리 키로 설정해야 하는 이유</title>
              <link>https://soultree.inblog.io/db-기본-키를-대리-키로-설정해야-하는-이유-20111</link>
              <description>자연 키와 대리 키를 알아보고, 왜 대리 키를 주로 사용하는 지 알아보자.</description>
              <pubDate>Mon, 13 May 2024 10:58:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/db-기본-키를-대리-키로-설정해야-하는-이유-20111</guid>
              <category>Database</category>
              <author>Hi</author>
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            </item><item>
              <title>[DB] 여러가지 키</title>
              <link>https://soultree.inblog.io/여러가지-키-19850</link>
              <description>수퍼키, 후보키, 기본키, 대체키, 외래키, 복합키 등 여러가지 키를 예시를 통해 살펴보자.</description>
              <pubDate>Tue, 07 May 2024 08:07:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/여러가지-키-19850</guid>
              <category>Database</category>
              <author>Hi</author>
              <enclosure url="https://image.inblog.dev?url=https%3A%2F%2Fsource.inblog.dev%2Ffeatured_image%2F2024-05-07T08%3A08%3A03.277Z-e3f1378b-f154-41a0-abed-a078d3bc5838&amp;w=1920&amp;q=85" type="image/webp"/>
            </item><item>
              <title>[DB] 정규화</title>
              <link>https://soultree.inblog.io/db-정규화-19827</link>
              <description>각 정규형에 대한 정규화 방법을 알아보자.</description>
              <pubDate>Mon, 06 May 2024 16:16:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/db-정규화-19827</guid>
              <category>Database</category>
              <author>Hi</author>
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            </item><item>
              <title>[Spring] JMeter로 MVC와 WebFlux API 서버 성능 테스트</title>
              <link>https://soultree.inblog.io/spring-jmeter로-mvc와-webflux-api-서버-성능-테스트-19508</link>
              <description>Spring Web MVC기반 API 서버와 Spring WebFlux 기반 API 서버의 성능을 테스트하기 위해 JMeter를 사용하여 테스트한다.</description>
              <pubDate>Mon, 29 Apr 2024 06:50:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/spring-jmeter로-mvc와-webflux-api-서버-성능-테스트-19508</guid>
              <category>Spring</category>
              <author>Hi</author>
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            </item><item>
              <title>[Server] 웹 서버와 웹 애플리케이션 서버 및 프록시에 관해</title>
              <link>https://soultree.inblog.io/server-웹-서버와-웹-애플리케이션-서버-및-프록시에-관해-19474</link>
              <description>웹 서버와 웹 애플리케이션 서버의 기능과 차이는 무엇이며, 포워드 프록시와 리버스 프록시에 대해서도 간단히 살펴보자.</description>
              <pubDate>Sun, 28 Apr 2024 08:49:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/server-웹-서버와-웹-애플리케이션-서버-및-프록시에-관해-19474</guid>
              <category>Server</category>
              <author>Hi</author>
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            </item><item>
              <title>[Spring] Spring MVC 에서 클라이언트와 서버 간 데이터를 어떻게 주고 받을까?</title>
              <link>https://soultree.inblog.io/spring-spring-mvc-에-클라이언트-와-서버-간-데이터를-어떻게-주고-받을까-19217</link>
              <description>Spring MVC에서 클라이언트와 서버 간 데이터를 어떻게 주고받는 지 예시를 통해 알아보자. 추가적으로, 왜 DTO를 통해 데이터를 주고받아야 하는지 살펴보자.</description>
              <pubDate>Tue, 23 Apr 2024 04:37:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/spring-spring-mvc-에-클라이언트-와-서버-간-데이터를-어떻게-주고-받을까-19217</guid>
              <category>Spring</category>
              <author>Hi</author>
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            </item><item>
              <title>[OS] Segmentation</title>
              <link>https://soultree.inblog.io/os-segmentation-19197</link>
              <description>기본적인 베이스 바운드 레지스터 주소변환 체계의 문제를 세그멘테이션으로 해결하자.</description>
              <pubDate>Mon, 22 Apr 2024 12:55:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/os-segmentation-19197</guid>
              <category>OS</category>
              <author>Hi</author>
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            </item><item>
              <title>[Spring] @Transient어노테이션</title>
              <link>https://soultree.inblog.io/spring-transient-어노테이션-19104</link>
              <description>@Transient Annotation의 사용법과 주의사항을 알아보자.</description>
              <pubDate>Sun, 21 Apr 2024 14:49:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/spring-transient-어노테이션-19104</guid>
              <category>Spring</category><category>Java</category>
              <author>Hi</author>
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            </item><item>
              <title>[Spring] JUnit과 AssertJ로 테스트 코드 작성하기</title>
              <link>https://soultree.inblog.io/spring-junit과-assertj로-테스트-코드-작성하기-19097</link>
              <description>Spring에서 주로 사용하는 JUnit과 AssertJ를 왜, 어떻게 사용하는 지 예시 코드를 통해 살펴보자.</description>
              <pubDate>Sat, 20 Apr 2024 14:49:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/spring-junit과-assertj로-테스트-코드-작성하기-19097</guid>
              <category>Spring</category><category>Java</category>
              <author>Hi</author>
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            </item><item>
              <title>[Network] 라우팅 알고리즘</title>
              <link>https://soultree.inblog.io/network-라우팅-알고리즘-19052</link>
              <description>라우팅 알고리즘의 분류 기준에 따라 나뉘는 Link State 알고리즘과 Distance Vector 알고리즘에 대해 알아보자.</description>
              <pubDate>Fri, 19 Apr 2024 05:00:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/network-라우팅-알고리즘-19052</guid>
              <category>Network</category>
              <author>Hi</author>
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            </item><item>
              <title>[OS] 하드웨어 기반 메모리 주소 변환</title>
              <link>https://soultree.inblog.io/os-하드웨어-기반-메모리-주소-변환-18951</link>
              <description>하드웨어가 명령어 반입, 탑재, 저장 등의 가상 주소를 정보가 실제 존재하는 물리 주소로 변환하는 과정을 알아보자.</description>
              <pubDate>Thu, 18 Apr 2024 00:21:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/os-하드웨어-기반-메모리-주소-변환-18951</guid>
              <category>OS</category>
              <author>Hi</author>
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            </item><item>
              <title>[Spring] Logback 기반 모니터링</title>
              <link>https://soultree.inblog.io/spring-logback-기반-모니터링-18927</link>
              <description>Spring에서 Logback을 이용한 모니터링을 통해 서버의 동작 및 데이터에 관한 기록을 남겨보자</description>
              <pubDate>Wed, 17 Apr 2024 03:45:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/spring-logback-기반-모니터링-18927</guid>
              <category>Spring</category>
              <author>Hi</author>
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            </item><item>
              <title>[Spring] AOP를 왜 사용할까?</title>
              <link>https://soultree.inblog.io/spring-aop를-왜-사용할까-18857</link>
              <description>Spring에서 AOP를 사용하는 이유와 사용 방법을 코드 예시를 통해 알아보자.</description>
              <pubDate>Tue, 16 Apr 2024 00:48:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/spring-aop를-왜-사용할까-18857</guid>
              <category>Spring</category><category>Java</category>
              <author>Hi</author>
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            </item><item>
              <title>[OS] RT scheduling</title>
              <link>https://soultree.inblog.io/os-rt-scheduling-18781</link>
              <description>Real Time Scheduling에 대한 오해와 알고리즘 동작 방식에 대해 알아보자. </description>
              <pubDate>Mon, 15 Apr 2024 03:59:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/os-rt-scheduling-18781</guid>
              <category>OS</category>
              <author>Hi</author>
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            </item><item>
              <title>[OS] MLFQ: Multi Level Feedback Queue</title>
              <link>https://soultree.inblog.io/os-mlfq-multi-level-feedback-queue-18716</link>
              <description>멀티 레벨 피드백 큐에 대해 자세히 알아보자.</description>
              <pubDate>Sun, 14 Apr 2024 03:59:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/os-mlfq-multi-level-feedback-queue-18716</guid>
              <category>OS</category>
              <author>Hi</author>
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            </item><item>
              <title>[Network] 서브넷과 CIDR</title>
              <link>https://soultree.inblog.io/network-서브넷과-cidr-18702</link>
              <description>서브넷, 서브넷 마스크, CIDR에 대해 알아보자.</description>
              <pubDate>Sat, 13 Apr 2024 12:52:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/network-서브넷과-cidr-18702</guid>
              <category>Network</category>
              <author>Hi</author>
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            </item><item>
              <title>[OS] Scheduling에 대하여</title>
              <link>https://soultree.inblog.io/os-scheduling에-대하여-18658</link>
              <description>CPU가 프로세스를 실행하는 순서를 나타내는 스케쥴링과 알고리즘 종류를 알아보자.</description>
              <pubDate>Fri, 12 Apr 2024 00:50:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/os-scheduling에-대하여-18658</guid>
              <category>OS</category>
              <author>Hi</author>
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            </item><item>
              <title>[UDP] echo server 및multicast 방식의 채팅 프로그램 구현하기</title>
              <link>https://soultree.inblog.io/udp1</link>
              <description>UDP 기반 소켓 통신을 이해하고 2가지 echo 서버를 구현해본 뒤, multicast 방식의 채팅 프로그램을 구현해보자.</description>
              <pubDate>Thu, 11 Apr 2024 01:04:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/udp1</guid>
              <category>Network</category><category>Socket Programming</category><category>C</category>
              <author>Hi</author>
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            </item><item>
              <title>[OS] Limited Direct Execution이란? </title>
              <link>https://soultree.inblog.io/os1</link>
              <description>직접 실행의 원리를 알아보고 문제를 파악한 뒤, 제한적 직접 실행의 원리를 알아보자.</description>
              <pubDate>Wed, 10 Apr 2024 05:21:53 GMT</pubDate>
              <guid>https://soultree.inblog.io/os1</guid>
              <category>OS</category>
              <author>Hi</author>
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            </item><item>
              <title>[TCP] Iterative echo server</title>
              <link>https://soultree.inblog.io/tcp-iterative-echo-server</link>
              <description>TCP 기반 Iterative echo server와 client를 구현하고, 이에 대한 한계점을 분석해보자.</description>
              <pubDate>Tue, 09 Apr 2024 02:30:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/tcp-iterative-echo-server</guid>
              <category>C</category><category>Socket Programming</category><category>Network</category>
              <author>Hi</author>
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            </item><item>
              <title>[Spring Boot] 스프링 콘셉트에 대해 알아보자</title>
              <link>https://soultree.inblog.io/spring1</link>
              <description>스프링의 콘셉트 IoC, DI, Bean&amp;Container, AOP, PSA에 대해 알아보자.</description>
              <pubDate>Mon, 08 Apr 2024 07:41:00 GMT</pubDate>
              <guid>https://soultree.inblog.io/spring1</guid>
              <category>Spring</category>
              <author>Hi</author>
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