What is data virtualization ?

What Is Data Virtualization?

Data virtualization software acts as a bridge across multiple, diverse data sources, bringing critical decision-making data together in one virtual place to fuel analytics.

Data virtualization provides a modern data layer that enables users to access, combine, transform, and deliver datasets with breakthrough speed and cost-effectiveness. Data virtualization technology gives users fast access to data housed throughout the enterprise—including in traditional databases, big data sources, and cloud and IoT systems—at a fraction of physical warehousing and extract/transform/load (ETL) time and cost.

With data virtualization, users can apply a range of analytics—including visualized, predictive, and streaming analytics—on fresh, up-to-the-minute data updates. Through integrated governance and security, data virtualization users are assured their data is consistent, high quality, and protected. Additionally, data virtualization allows for more business-friendly data, transforming native IT structures and syntax into easy-to-understand, IT-curated data services that are easy to find and use via a self-service business directory.

Data virtualization supports multiple lines of business, hundreds of projects, and thousands of users that can increase from project to enterprise scale.

The Benefits:

  1. Real-Time Insights: Imagine a retail company monitoring sales data from multiple stores. With data virtualization, the company can access and analyze sales figures in real time, facilitating swift decisions like optimizing stock levels or launching timely promotions. This agility sets the stage for competitive advantage.

  2. Reduced Complexity: Data virtualization simplifies data access by abstracting underlying complexities. For instance, a multinational corporation can seamlessly aggregate financial data from diverse subsidiaries, each employing different accounting systems. This simplification enhances operational efficiency and minimizes the learning curve for users.

  3. Cost and Time Efficiency: Traditional data integration methods involve time-consuming ETL (Extract, Transform, Load) processes. Data virtualization significantly reduces the need for ETL, saving time and resources. Moreover, the streamlined process minimizes maintenance efforts associated with managing multiple data copies.

  4. Enhanced Data Security: Since data remains in its original source, sensitive information is less exposed to potential breaches. Access controls at the virtualization layer bolster data security and compliance, reducing the risk of unauthorized access or data leaks.

  5. Agility and Flexibility: Data virtualization empowers business users to access the data they need, when they need it. This self-service approach fosters quicker decision-making and nimble responses to market trends. Business analysts can explore diverse data sets without relying on technical teams for data preparation.

Implementation Considerations:

  1. Data Source Connectivity: A robust data virtualization solution must seamlessly connect to various data sources, spanning relational databases, cloud repositories, APIs, and more.

  2. Performance Optimization: Efficient query execution is crucial. Optimization techniques like caching, query rewriting, and parallel processing ensure timely and accurate data retrieval.

  3. Metadata Management: Comprehensive metadata management provides users with context about the data’s origin, structure, and semantics, enabling informed analysis.

  4. Data Governance: Implement strong governance practices to maintain data quality, ensure compliance, and enforce access controls.

A Concrete Example:

Consider a healthcare network that operates across various hospitals and clinics. Each facility maintains its patient records in separate databases due to different software systems. Medical staff often need a holistic view of a patient’s medical history, regardless of where they’ve received treatment.

By implementing data virtualization, the healthcare network creates a unified view of patient data. When a doctor accesses a patient’s record, the virtualization layer seamlessly fetches the relevant information from various databases. This allows the doctor to make well-informed decisions based on the patient’s complete medical background, improving care quality and patient outcomes.


Data virtualization emerges as a game-changer in the data landscape, offering a powerful solution to the challenges posed by data silos and disparate sources. By providing a unified, abstracted interface to access data, organizations can achieve real-time insights, streamline operations, and empower users with self-service analytics. The example of a healthcare network showcases how data virtualization can revolutionize decision-making and enhance patient care. As data continues to proliferate, data virtualization stands as a beacon guiding organizations toward smarter, more efficient data management and utilization. Its role in driving innovation and informed decision-making cannot be understated as businesses navigate the complexities of the modern data ecosystem.