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Database Kullanımı
#12
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ucrayca
closed
4 years ago
ucrayca
commented
4 years ago
[x] MySql kullanımı
[x] Yeni database oluşturma
[x] Oluşturulan database içerisinde tablo oluşturma
[x] Tabloya .csv uzantılı dosyaları import etme
[x] Key atamalarını yapma
[x] Tablolar arası foreign key ilişkisi
[x] ER diagramı oluşturulması
ucrayca
commented
4 years ago
Candidate Key :
The minimal set of fields which can uniquely identify each record in a table.
There can be more than one
Primary Key :
A candidate key that is most appropriate to become the main key for any table.
Uniquely identify each record in a table.
Foreign Key :
Column which is added to create a relationship with another table.There are two different entities.
The same attribute types
Foreign keys are the columns of a table that points to the primary key of another table. They act as a cross-reference between tables.
ER Diagram :
Entity–relationship model
Shows the relationship among entity sets
ER diagram shows the complete logical structure of a database