Examine the structure proposed for the TRANSACTIONS table:
Which statements are true regarding the creation and storage of data in the above table structure? (Choose all that apply.)
A. The CUST_STATUS column would give an error.
B. The TRANS_VALIDITY column would give an error.
C. The CUST_STATUS column would store exactly one character.
D. The CUST_CREDIT_LIMIT column would not be able to store decimal values.
E. The TRANS_VALIDITY column would have a maximum size of one character.
F. The TRANS_DATE column would be able to store day, month, century, year, hour, minutes, seconds, and fractions of seconds.
Correct Answer: BC
Explanation/Reference:
Explanation:
VARCHAR2(size)Variable-length character data (A maximum size must be specified: minimum size is 1; maximum size is 4,000.)
CHAR [(size)] Fixed-length character data of length size bytes (Default and minimum size is 1; maximum size is 2,000.)
NUMBER [(p,s)] Number having precision p and scale s (Precision is the total number of decimal digits and scale is the number of digits to the right of the decimal point; precision can range from 1 to 38, and scale can range from -84 to 127.)
DATE Date and time values to the nearest second between January 1, 4712 B.C., and December 31, 9999 A.D.
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D is correct to.
CREATE TABLE q55 (col1 NUMBER);
INSERT INTO q55 VALUES (123.21);
SELECT * FROM q55;