Define RDB Index

Select the correct relational database index definition from the options below:

An database index is an arranged data structure that allows the database to locate relevant data on storage based on the values of the indexed columns without scanning the entire table. In most cases, an index speeds up data retrieval but slows down data modification by adding the cost of updating the index itself.

An database index is a duplicate copy of a table stored in a separate location for backup purposes.

An index is a mandatory component for every table in a database.

An index is a built-in search function within the database software.

Mark all correct answers and click the "Check!" button

Tutorial Get hint

Support SQLtest.online

This project has only one funding source: your donations. The monthly maintenance cost is $100.

Last month I added a new MariaDB database with a preloaded University DB, 9 new questions, and refactored many questions and lessons.

With your support, I plan to continue this work: write new lessons and tasks, and improve existing lessons.

To keep the project running next month, we need to collect at least this amount by the end of this month. Anything above it goes to new lessons, exercises, and features.

Received: $17.60 Goal: $100.00

Progress: 18%

Learning SQL: Generate, Manipulate, and Retrieve Data by Alan Beaulieu

As data floods into your company, you need to put it to work right away―and SQL is the best tool for the job. With the latest edition of this introductory guide, author Alan Beaulieu helps developers get up to speed with SQL fundamentals for writing database applications, performing administrative tasks, and generating reports. You’ll find new chapters on SQL and big data, analytic functions, and working with very large databases.

Hi! Could we please enable some services and cookies to improve your experience and our website?

Privacy & Cookie Policy.

Practice

Lessons

Playground

Test

Define RDB Index

Login

Register

Define RDB Index