OCP-047 add column on a table, and cannot contain null
2012-08-24 09:47
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175. View the Exhibit and examine the data in the PRODUCTS table.
Which statement would add a column called PRICE, which cannot contain NULL?
A. ALTER TABLE products ADD price NUMBER(8,2) NOT NULL;
B. ALTER TABLE products ADD price NUMBER(8,2) DEFAULT NOT NULL;
C. ALTER TABLE products ADD price NUMBER(8,2) DEFAULT 0 NOT NULL;
D. ALTER TABLE products ADD price NUMBER(8,2) DEFAULT CONSTRAINT p_nn NOT NULL;
Answer: C
Which statement would add a column called PRICE, which cannot contain NULL?
A. ALTER TABLE products ADD price NUMBER(8,2) NOT NULL;
B. ALTER TABLE products ADD price NUMBER(8,2) DEFAULT NOT NULL;
C. ALTER TABLE products ADD price NUMBER(8,2) DEFAULT 0 NOT NULL;
D. ALTER TABLE products ADD price NUMBER(8,2) DEFAULT CONSTRAINT p_nn NOT NULL;
Answer: C
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