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Fleas feed on the blood of dogs, cats, and people. What is this ecological relationship called?
LastName Field
A specific field in a database used to store the last name of individuals, often part of a larger record like customer or employee information.
Required
A constraint in databases or forms that enforces a field to be filled in or provided with data before saving or proceeding.
Referential Integrity
A concept in databases ensuring that relationships between tables remain consistent, typically enforced through foreign keys.
Yes/No Data Type
A specific data type used in databases for fields that can only hold two possible values, typically representing true or false, or yes or no conditions.
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