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Database

• PostgreSQL Constraints

  Database 2021. 12. 22. 17:44

  PostgreSQL의 Constraints(제약조건)에 대해 정리하였습니다. Our database will be designed to accept input from a variety of applications, user filled-forms, and other sources. We’d also like to put data validation in place to protect our DB from receiving unexpected, improperly formatted, or invalid data. Luckily for us, PostgreSQL offers methods to safeguard a database and maintain data integri..

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• SQL Manipulation

  Database 2021. 11. 23. 15:02

  이 글은 SQL(Structured Query Language)의 간단한 사용방법을 정리하기 위해 작성하였습니다. A relational database management system (RDBMS) is a program that allows you to create, update, and administer a relational database. Most relational database management systems use the SQL language to access the database. Relational databases store data in tables. Tables ..

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