FIRST-GRADE ORACLE 1Z0-071 NEW BRAINDUMPS QUESTIONS | TRY FREE DEMO BEFORE PURCHASE

First-grade Oracle 1z0-071 New Braindumps Questions | Try Free Demo before Purchase

First-grade Oracle 1z0-071 New Braindumps Questions | Try Free Demo before Purchase

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Oracle Database SQL Sample Questions (Q101-Q106):

NEW QUESTION # 101
View the Exhibit and examine the description for the PRODUCTS and SALES table.

PROD_IDis a primary key in the PRODUCTStable and foreign key in the SALEStable with ON DELETE CASCADEoption. The SALEStable contains data for the last three years. You want to remove all the rows from the PRODUCTStable for which no sale was done for the last three years.
Which is the valid DELETEstatement?

  • A. DELETE
    FROM products
    WHERE prod_id = (SELECT prod_id
    FROM sales
    WHERE time_id - 3*365 = SYSDATE );
  • B. DELETE
    FROM products
    WHERE prod_id IN (SELECT prod_id
    FROM sales
    WHERE time_id >= SYSDATE - 3*365 );
  • C. DELETE
    FROM products
    WHERE prod_id IN (SELECT prod_id
    FROM sales
    WHERE SYSDATE - 3*365 >= time_id);
  • D. DELETE
    FROM products
    WHERE prod_id = (SELECT prod_id
    FROM sales
    WHERE SYSDATE >= time_id - 3*365 );

Answer: C


NEW QUESTION # 102
In the PROMOTIONS table, the PROMO_ BEGIN_DATE column is of data type and the default date format is DD-MON-RR Which two statements are true about expressions using PROMO_ BEGIN_DATE in a query?

  • A. PROMO_ BEGIN_DATE - SYSDATE will return a number
  • B. TODATE(PROMO BEGIN_DATE *5) will return a date
  • C. PROMO_ BEGIN_DATE - SYSDATE will return an error
  • D. PROMO_ BEGIN_DATE - 5 will return a date
  • E. TONUMBER (PROMO BEGIN_DATE) - 5 will return a number

Answer: A,D


NEW QUESTION # 103
Which three statements are true reading subquenes?

  • A. Only one column or expression can be compared between the subquery and main query.
  • B. A Main query can have many subqueries.
  • C. The subquery and main query can retrieve data from different tables.
  • D. Multiple columns or expressions can be compared between the subquery and main query.
  • E. The subquery and main query must retrieve date from the same table.
  • F. A subquery can have more than one main query.

Answer: B,C,D


NEW QUESTION # 104
Which two are true about a SQL statement using SET operators such as UNION?

  • A. 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.
  • B. The data type group of each column returned by the second query must match the data type group of the corresponding column returned by the first query.
  • C. The data type of each column returned by the second query must exactly match the data type of the corresponding column returned by the first query.
  • D. The names and number of columns must be identical for all SELECT statements in the query.
  • E. The number, but not names, of columns must be identical for all SELECT statements in the query.

Answer: C,E


NEW QUESTION # 105
Which two are true about multiple table INSERT statements?

  • A. The conditional INSERT FIRST statement always inserts a row into a single table.
  • B. The conditional INSERT ALL statement inserts rows into a single table by aggregating source rows.
  • C. They can transform a row from a source table into multiple rows in a target table.
  • D. The unconditional INSERT ALL statement must have the same number of columns in both the source and target tables.
  • E. They always use subqueries.

Answer: C,D

Explanation:
B: True. Multiple table insert statements, specifically the conditional INSERT ALL, can transform a single row from the source table into multiple rows in one or more target tables depending on the conditions specified in the WHEN clauses.
E: True. The unconditional INSERT ALL statement will insert rows into multiple target tables without any conditions. However, it does not require the same number of columns in both the source and target tables. The INSERT ALL syntax allows you to specify different columns for each target table into which rows will be inserted.
Multiple table insert operations allow for complex insert scenarios, where based on the data, one can insert into different tables or multiple times into the same table based on different conditions.
Reference:
Oracle SQL reference details the use of INSERT ALL and INSERT FIRST clauses for inserting into multiple tables based on conditions specified.


NEW QUESTION # 106
......

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