Advanced DML & Data Movement MCQs

6 MCQs — Oracle: Modifying Data & Multiple Databases MCQs

Practice Advanced DML & Data Movement MCQs with correct answers and explanations. These questions are from the Oracle: Modifying Data & Multiple Databases MCQs section.

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Oracle: Modifying Data & Multiple Databases Subcategories

Advanced DML & Data Movement	Common Errors & Integrity During DML
Database Links & Distributed Operations	Database Links & Replication
DML & Transactions	DML Statements & Locking
Moving & Loading Data

What does the MERGE statement do?

Joins two databases together
Merges two tablespaces
Deletes duplicate tables
Inserts new rows or updates existing rows in a single statement

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Which statement inserts into multiple tables from one query?

INSERT ALL
INSERT MANY
MULTI INSERT
INSERT EACH

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In a MERGE statement, which clause handles rows that already exist?

WHEN FOUND THEN INSERT
ON DUPLICATE KEY UPDATE
WHEN MATCHED THEN UPDATE
IF EXISTS THEN UPDATE

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Which statement copies rows from one table to another existing table?

COPY t1 TO t2;
MOVE t1 INTO t2;
UPDATE t2 FROM t1;
INSERT INTO t2 SELECT * FROM t1;

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What does CREATE TABLE new_emp AS SELECT * FROM emp; do?

Creates a new table with the structure and data of the query
Creates a view
Creates only an empty structure
Renames EMP

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Which Oracle utility moves data between databases using dump files?

SQL*Loader
tnsping
Data Pump (expdp/impdp)
lsnrctl

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