Primary Key « Constraints « PostgreSQL

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PostgreSQL » Constraints » Primary Key

1.	Implicit index is created when creating a table for a primary key
2.	Primary keys constrains more than one column
3.	Indicate one column as the primary key column
4.	PRIMARY KEY will create implicit index
5.	Primary key with check option
6.	Add PRIMARY KEY in table creation
7.	Use sequence value as a primary key

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