Data integration is the process of combining data from multiple sources or formats into a unified, coherent, and consistent view. The goal of data integration is to provide users and applications with access to a comprehensive and integrated dataset that can be used for analysis, reporting, decision-making, and other business activities.
This is one of the ‘umbrella categories, as it involves many of the other areas of attention, including data governance, data matching, data merging, data dictionary, data catalog, and others.
Key aspects of data integration include:
- Data Sources: Identifying and accessing data from disparate sources, which may include databases, data warehouses, cloud storage, applications, APIs, spreadsheets, and external sources.
- Data Formats: Handling data in different formats, such as structured data (e.g., relational databases), semi-structured data (e.g., XML, JSON), and unstructured data (e.g., text documents, images), and transforming it into a standardized format for integration.
- Data Transformation: Performing data transformations, conversions, and mappings to reconcile differences in data structures, semantics, and representations across different sources, ensuring consistency and compatibility in the integrated dataset.
- Data Quality: Ensuring the quality, accuracy, completeness, and consistency of data throughout the integration process, including data cleansing, deduplication, validation, and enrichment, to maintain data integrity and reliability.
- Data Movement: Extracting, loading, and transforming data (ETL) or streaming data (ETL) from source systems to target systems, platforms, or repositories where integrated data is stored and accessed by users and applications.
- Data Governance: Implementing data governance policies, procedures, and controls to manage data integration processes, ensure compliance with regulatory requirements, and enforce data security, privacy, and access controls.
- Data Synchronization: Keeping integrated data synchronized and up-to-date with changes in source systems through periodic or real-time data synchronization processes, ensuring that users have access to the most current and accurate information.
- Data Federation: Providing a virtualized or federated view of data across distributed or heterogeneous data sources without physically consolidating data into a single repository, enabling users to access and query integrated data transparently across multiple sources.
- Metadata Management: Managing metadata, data dictionaries, and data lineage information to document and track the origin, structure, semantics, and usage of integrated data, facilitating data discovery, understanding, and governance.