Exam 1z0-071 topic 1 question 78 discussion

C. The data type of each column returned by the second query must be implicitly convertible to the data type of the corresponding column returned by the first query. The data types must be implicitly convertible between corresponding columns. For example: A NUMBER column in the first query can correspond to a VARCHAR column in the second query, provided Oracle can implicitly convert the VARCHAR to a NUMBER. E. The number, but not names, of columns must be identical for all select statements in the query. All queries in a UNION, INTERSECT, or MINUS statement must return the same number of columns, but the column names do not have to match.

C is correct.

C is correct because it fulfill all the condition. 1) store without conversion 2) store up to 99 years and 11 month 3) can be use for calculation

The INTERVAL DAY TO SECOND data type is used to store a period of time in terms of days, hours, minutes, and seconds. It does not support storing a loan period of up to 10 years, as it does not have a year component. To meet the requirements of storing a loan period of up to 10 years and supporting date arithmetic without using conversion functions, you should use the INTERVAL YEAR TO MONTH data type instead. This data type allows you to store a period of time in terms of years and months, which aligns with the requirement of storing a loan period.

ChatGPT came back with C (INTERVAL DAY TO SECOND): -This data type stores a period of time in terms of days, hours, minutes, and seconds. -It supports date arithmetic and can precisely represent the number of days a loan remains unpaid, making it suitable for calculating daily interest. -This seems like the most appropriate choice for the given requirements. Based on the analysis: The most appropriate choice is C. INTERVAL DAY TO SECOND because it fulfills all the requirements. Options A, B, D, and E are not suitable because they either don't consider the number of days specifically (A) or represent specific points in time rather than durations (B, D, E). -------- Please correct me if I'm wrong.

ChatGPT comes back with INTERVAL YEAR TO MONTH

B is correct

C is correct