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Consider the DBDL description of an entity shown in the exhibit: Hardware ( hardware _ id: integer NOT NULL hardware _ name: variable length character
Consider the DBDL description of an entity shown in the exhibit:
Hardware
hardwareid: integer NOT NULL
hardwarename: variable length character string length NOT NULL
hardwaredescription: variable length character string length NOT NULL
Primary Key: hardwareid
The highlighted portion of the description satisfies which integrity constraint?
A
Referential integrity
B
Entity integrity
Referential foreign integrity
Necessary data
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