article thumbnail

Database Administrator Roles And Responsibilities

U-Next

They ensure that the data is accurate, consistent, and available when needed. To achieve this, DBAs use a variety of tools and techniques, including data cleansing, data validation, and database backups. Data cleansing is the process of identifying and correcting errors in the data.

article thumbnail

Data Virtualization: Process, Components, Benefits, and Available Tools

AltexSoft

Query optimization — to improve query processing performance by caching virtual entities, enabling automatic joins, and supporting push-down querying (pushing down request operation to the source database). Data quality control — to ensure that all information is correct by applying data validation logic.

Process 69
article thumbnail

100+ Big Data Interview Questions and Answers 2023

ProjectPro

Step 4: Data Transformation and Enrichment Data transformation involves changing the format or value inputs to achieve a specific result or to make the data more understandable to a larger audience. Enriching data entails connecting it to other related data to produce deeper insights.