This content originally appeared on DEV Community and was authored by Suhngeun Yang
ctrl +/ or \
모델링 : 논리적 모델링,
row, tuple, record
field, attribute, variable, feature
단일값속성 <-> 다중값속성
단순속성 <-> 복합속성
key란 : 유일성과 최소성을 만족하는 릴레이션의 value를 찾을 때 사용하는 값?
key란 : tuple을 구분할 수 있는 attribute
키의 종류 : super key, candidate key, primary key, alternate key, foreign key
한 테이블의 중복되지 않은 로우의 개수 : cardinality
매핑 카디널 : 1:1 1:n n:m
degree
unique, not null, check, default, primary
regression
cause and result
This content originally appeared on DEV Community and was authored by Suhngeun Yang
Print
Share
Comment
Cite
Upload
Translate
Updates
There are no updates yet.
Click the Upload button above to add an update.
APA
MLA
Suhngeun Yang | Sciencx (2024-06-17T01:26:40+00:00) Data structure. Retrieved from https://www.scien.cx/2024/06/17/data-structure-2/
" » Data structure." Suhngeun Yang | Sciencx - Monday June 17, 2024, https://www.scien.cx/2024/06/17/data-structure-2/
HARVARDSuhngeun Yang | Sciencx Monday June 17, 2024 » Data structure., viewed ,<https://www.scien.cx/2024/06/17/data-structure-2/>
VANCOUVERSuhngeun Yang | Sciencx - » Data structure. [Internet]. [Accessed ]. Available from: https://www.scien.cx/2024/06/17/data-structure-2/
CHICAGO" » Data structure." Suhngeun Yang | Sciencx - Accessed . https://www.scien.cx/2024/06/17/data-structure-2/
IEEE" » Data structure." Suhngeun Yang | Sciencx [Online]. Available: https://www.scien.cx/2024/06/17/data-structure-2/. [Accessed: ]
rf:citation » Data structure | Suhngeun Yang | Sciencx | https://www.scien.cx/2024/06/17/data-structure-2/ |
Please log in to upload a file.
There are no updates yet.
Click the Upload button above to add an update.