For the following SQL Database questions choose the correct response: ------------------------------------------------------------------ Question a. :In relational model, a foreign key must match the domain of i. the primary key it refers to in another table. (here "it" indicates the foreign key.) ii. the primary key it refers to in the same table. (here "it" indicates the foreign key.) iii.both i . and ii. iv. neither i. nor ii.

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Question b. :In relational model, a relation schema contains i. the relation name ii. a set of attributes in the relation iii.both i. and ii. iv. neither i. nor ii

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Question c. :In relational model, a relational database schema contains i. a set of relation schemas ii. a set of relation tables iii. both i. and ii. iv. neither i., ii., nor iii.