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The CHECK constraint is used to define a condition for the values that the attribute domain cannot have.
Viral Carcinogen
A virus known to cause cancer in humans or animals.
Integumentary
Pertaining to the skin and its appendages, functioning in protection, sensation, and regulation.
Ultraviolet Radiation
A type of electromagnetic radiation coming from the sun and some artificial sources, which can have both beneficial and harmful effects on human health.
Physical Carcinogen
A substance, material, or exposure that physically causes cancer, typically through direct physical damage to DNA.
Q9: The default comparison condition for the subtype
Q33: Instead of storing a person's age,it is
Q36: The _ data model uses the concept
Q39: In a database context,a(n)_ indicates the use
Q51: In an SQL-based relational database,rows in different
Q61: M:N relationships are not appropriate in a
Q63: In Oracle,the _ command is used to
Q67: Because the relational model uses attribute values
Q84: Because a partial dependency can exist only
Q93: In _,no row may contain two or