100% Pass Quiz 2026 Oracle 1z1-071: Accurate Standard Oracle Database SQL Answers

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Oracle Database SQL Sample Questions (Q424-Q429):

NEW QUESTION # 424
Which three are true about the MERGE statement?

A. It can update, insert, or delete rows conditionally in multiple tables.
B. It can merge rows only from tables.
C. It can update the same row of the target table multiple times.
D. It can combine rows from multiple tables conditionally to insert into a single table.
E. It can use views to produce source rows.
F. It can use subqueries to produce source rows.

Answer: D,E,F

Explanation:
B: True. The Oracle Database MERGE statement can use a subquery that involves views to generate the source data for the merge operation. This allows for greater flexibility in specifying the data to be merged.
C: True. MERGE can conditionally combine rows from one or more source tables (or views, or the results of a subquery) to insert or update rows in a single target table based on whether or not a match exists.
D: True. MERGE can indeed use subqueries to produce source rows. The source data for a merge operation can be a table, view, or the result of a subquery.
The MERGE statement is a powerful SQL operation in Oracle that allows for conditional INSERT or UPDATE operations in one statement, often referred to as an "upsert" operation. It can handle complex scenarios where the decision to insert or update is based on whether the data matches between the target and source datasets.
Reference:
Oracle SQL documentation on the MERGE statement provides information on how it can use different data sources, including subqueries and views, and perform conditional operations on the target table.

NEW QUESTION # 425
Examine this SQL statement:

Which two are true?

A. The subquery is not a correlated subquery.
B. The DELETE statement executes successfully even if the subquery selects multiple rows.
C. The subquery is executed for every row in the employees table.
D. All existing rows in the EMPLOYEES table are deleted.
E. The subquery is executed before the DELETE statement is executed.

Answer: C,E

NEW QUESTION # 426
View the Exhibit and examine the description of the tables.

You execute this SQL statement:

Which three statements are true? (Choose three.)

A. The statement will fail because a subquery may not be contained in a VALUESclause.
B. A customer can exist in many countries.
C. The SALEStable has five foreign keys.
D. A product can have a different unit price at different times.
E. The statement will execute successfully and a new row will be inserted into the SALES table.
F. The statement will fail if a row already exists in the SALEStable for product 23.

Answer: B,C,E

NEW QUESTION # 427
Examine the data in the COLORStable:

Examine the data in the BRICKStable:

Which two queries return all the rows from COLORS? (Choose two.)

Answer: B,E

NEW QUESTION # 428
Examine the description of the sales table.
The sales table has 55,000 rows.
Examine this statements:
Which two statements are true?

A. SALES1 created with no rows.
B. SALES1 created with 1 row.
C. SALES1 created with 55, 000 rows
D. SALES1 has PRIMARY KEY and UNIQUE constraints on any selected columns which had those constraints in the SALES table.
E. SALES1 has NOT NULL constraints on any I selected columns which had those constraints I in the SALES table.

Answer: C,E

NEW QUESTION # 429
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