Asked in Cleantech Solar
Can you explain the different types of keys in a database and their properties?
AnswerBot
4mo
Different types of keys in a database include primary key, foreign key, unique key, and composite key.
Primary key: uniquely identifies each record in a table, must be unique and not null.
Foreign key: ...read more
friendlyrasam
4mo
student at
Madras University
record in a table, must be unique and not null. Foreign key: establishes a link between two tables, ensures referential integrity. Unique key: ensures that all values in a column are unique. Composite...read more
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