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单选题

Evaluate the CREATE TABLE statement:   CREATE TABLE products   (product_id NUMBER (6)  CONSTRAINT prod_id_pk PRIMARY KEY,  product_name VARCHAR2 (15));   Which statement is true regarding the PROD_ID_PK constraint?()

发布日期:2022-07-20

Evaluate the CREATE TABLE statement:   CREATE TABL...
A

It would be created only if a unique index is manually created first.

B

It would be created and would use an automatically created unique index.

C

It would be created and would use an automatically created nonunique index.

D

It would be created and remains in a disabled state because no index is specified in the command.

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