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RDF-Star: Metadata Complexity Simplified

Ontotext

Relational databases benefit from decades of tweaks and optimizations to deliver performance. Not Every Graph is a Knowledge Graph: Schemas and Semantic Metadata Matter. This metadata should then be represented, along with its intricate relationships, in a connected knowledge graph model that can be understood by the business teams”.

Metadata 119
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Apache Iceberg optimization: Solving the small files problem in Amazon EMR

AWS Big Data

Iceberg tables store metadata in manifest files. As the number of data files increase, the amount of metadata stored in these manifest files also increases, leading to longer query planning time. The query runtime also increases because it’s proportional to the number of data or metadata file read operations.

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Speed up queries with the cost-based optimizer in Amazon Athena

AWS Big Data

Starting today, the Athena SQL engine uses a cost-based optimizer (CBO), a new feature that uses table and column statistics stored in the AWS Glue Data Catalog as part of the table’s metadata. Let’s discuss some of the cost-based optimization techniques that contributed to improved query performance.

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Maximize your data dividends with active metadata

IBM Big Data Hub

Metadata management performs a critical role within the modern data management stack. However, as data volumes continue to grow, manual approaches to metadata management are sub-optimal and can result in missed opportunities. This puts into perspective the role of active metadata management. Improve data discovery.

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What Is Active Metadata Management and How Does It Work?

Octopai

First, what active metadata management isn’t : “Okay, you metadata! Now, what active metadata management is (well, kind of): “Okay, you metadata! I will, of course, end up with a very amateurish finished product, because I used sub-optimal tools to do the job. That takes active metadata management.

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Optimization Strategies for Iceberg Tables

Cloudera

This blog discusses a few problems that you might encounter with Iceberg tables and offers strategies on how to optimize them in each of those scenarios. A bloated metadata.json file could increase both read/write times because a large metadata file needs to be read/written every time.

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What is Active Metadata & Why it Matters: Key Insights from Gartner’s Market Guide

Alation

With lots of data comes yet more calls for automation, optimization, and productivity initiatives to put that data to good use. Analysis, however, requires enterprises to find and collect metadata. Download Gartner’s “Market Guide for Active Metadata Management” to learn more, or read on for a summary of the firm’s outlook.