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What is join dependency and inclusion dependency?

What is join dependency and inclusion dependency?

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Join Dependency:
A Join dependency is generalization of Multivalued dependency.A JD {R1, R2, …, Rn} is said to hold over a relation R if R1, R2, R3, …, Rn is a lossless-join decomposition of R . There is no set of sound and complete inference rules for JD.

Inclusion Dependency:
An Inclusion Dependency is a statement of the form that some columns of a relation are contained in other columns. A foreign key constraint is an example of inclusion dependency.