ORACLE DATABASE INTERVIEW QUESTIONS

Course:Oracle
Chapter:Chapter 6 - DML (Data Manipulation Language)
Topic:UPDATE
Questions Count:16
1

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

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2

How do you update a single column in a table in Oracle?

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3

Can you update multiple columns in a single UPDATE statement in Oracle?

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4

How do you use a subquery in an UPDATE statement in Oracle?

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5

How do you update rows in one table based on values in another table in Oracle?

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6

How do you handle NULL values in an UPDATE statement in Oracle?

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7

How do you update multiple rows with different values in a single UPDATE statement in Oracle?

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8

What is a correlated subquery, and how is it used in an UPDATE statement in Oracle?

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9

How do you use the RETURNING clause with an UPDATE statement in Oracle?

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10

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

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11

Give one sample of using INNNER JOIN in Oracle's UPDATE statement

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12

What is the purpose of the UPDATE statement in Oracle DML?

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13

How can you update multiple columns in a single UPDATE statement?

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14

What are the common use cases for UPDATE in Oracle?

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15

What is data masking, and how can it be implemented using the UPDATE statement in Oracle?

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16

What are best practices when using the UPDATE statement in Oracle, especially for sensitive data?

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