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What is spurious tuples?
A spurious tuple is a record in database that get created when two tables are joined badly. Spurious tuples are created when two tables are joined on attributes that are neither primary keys nor foreign keys. Hopes this will help you .
Have foreign keys null values?
Yes Foreign key can have null value.
How do foreign keys ofrelations relate to candidate keys?
Foreign keys and candidate keys serve distinct roles in relational databases. A candidate key is a set of one or more attributes that can uniquely identify a tuple within a relation, while a foreign key is an attribute or a set of attributes in one relation that refers to the primary key of another relation. Foreign keys establish relationships between tables, ensuring referential integrity, whereas candidate keys ensure that each row within a table can be uniquely identified. Thus, while foreign keys link tables, candidate keys define uniqueness within a table.
What are the basic components of a database?
Tables, Entities, Attributes, Primary Keys, and Foreign Keys
How many foreign keys can you have in one table?
one
When was The Keys of This Blood created?
The Keys of This Blood was created in 1990.
When was The Keys of the Kingdom created?
The Keys of the Kingdom was created in 1941.
When was The Black Keys created?
The Black Keys was created in 2001.
When was The Mar-Keys created?
The Mar-Keys was created in 1958.
When was The Keys to the Street created?
The Keys to the Street was created in 1996.
When was The Bo-Keys created?
The Bo-Keys was created in 1998.
When was Keys to Imagination created?
Keys to Imagination was created in 1986.
