ORACLE DATABASE INTERVIEW QUESTIONS

Course:Oracle
Chapter:Chapter 6 - DML (Data Manipulation Language)
Topic:DELETE
Questions Count:15
1

What is the basic syntax of the DELETE statement in Oracle?

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2

How do you delete all rows from a table in Oracle?

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3

Can you use the DELETE statement without a WHERE clause in Oracle?

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4

How do you delete rows from one table based on conditions in another table in Oracle? -

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5

What is the difference between DELETE and TRUNCATE statements in Oracle?

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6

How do you use the RETURNING clause with a DELETE statement in Oracle?

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7

How do you handle foreign key constraints when deleting rows in Oracle?

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8

How do you delete rows in a table using a join condition in Oracle?

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9

What are the performance considerations when using the DELETE statement in Oracle?

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10

Explain how you would use a DELETE statement within a PL/SQL block in Oracle?

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11

How can you delete duplicate records in Oracle?

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12

How can you identify duplicate records in an Oracle table?

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13

How can you delete duplicate records while retaining one unique record in Oracle?

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14

How can you delete duplicates using the ROW_NUMBER() function in Oracle?

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15

How can you handle duplicates across multiple columns in Oracle?

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