More indexes on a table is always better for faster queries

  1. True

  2. False


Correct Option: B

AI Explanation

To answer this question, you need to understand the concept of indexes in a database table.

Indexes in a database are used to improve the performance of queries by allowing the database engine to quickly locate and retrieve the desired data. While indexes can speed up query execution, it is not always the case that adding more indexes to a table will result in faster queries. In fact, adding too many indexes to a table can have negative effects on performance.

Here's an explanation for each option:

Option A) True - This option is incorrect because adding more indexes to a table does not always guarantee faster queries. Each index comes with its own overhead in terms of storage and maintenance, and it can slow down data modification operations (such as INSERT, UPDATE, DELETE). Additionally, if the database optimizer does not choose the appropriate index for a query, it may not be able to take advantage of the indexes effectively.

Option B) False - This option is correct because adding more indexes to a table does not always result in faster queries. The decision to add an index should be based on careful analysis of the queries that will be executed on the table, considering factors such as the selectivity of the columns being queried, the frequency of data modifications, and the overall performance goals of the application.

The correct answer is B) False.

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