The Role of Metadata in Modern ETL Architecture
DOI:
https://doi.org/10.63282/3050-9262.IJAIDSML-V2I3P106Keywords:
ETL, Metadata Management, Data Lineage, Data Governance, Data Quality, Automation, DataOps, Schema Evolution, Big Data, Data Transformation, Data Catalog, Observability, Data Integration, Compliance, Pipeline Orchestration, Auditability, Data Provenance, Data Engineering, Scalable Architecture, Centralized Repositories, Adaptive Pipelines, Data Mapping, Workflow Automation, Data TransparencyAbstract
Still a fundamental method for controlling data flow across systems on contemporary data platforms, extract, transform, loadan acronym for ETL. It allows companies to compile data from multiple sources, convert it into a format they can utilize, and then store it in centralized databases such as data warehouses or lakes. As data volumes and compliance standards increase, ETL pipelines today depend not just on data transfer but also on sophisticated metadata management. Metadatasometimes referred to as "data about data"determines whether ETL systems become more transparent, scalable, or efficient. Automation improves by means of schema discovery, transformational logic reusing, and adaptive error management. Crucially for debugging, auditing, and developing confidence, it also offers data lineage, therefore allowing tracking of data sources, transformations, and destinations. Furthermore enhancing robust governance is metadata by using legal compliance, access policies, and data quality standards. This work investigates the changing use of metadata in contemporary ETL designs by way of examination of how well-known platforms and tools make use of metadata to improve development, assure data integrity, and promote traceability. We will look at real-world use cases, highlight important advantages including cost efficiency and agility, and address problems of establishing metadata-driven ETL systems, including metadata sprawl, integration complexity, and tool interoperability. Designing pipelines from inception or upgrading outdated processes demands a complete awareness and usage of metadata; building sustainable, future-oriented data infrastructure calls for this as well
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