Part 3/12:
Diverse Data Sources: Integration from myriad sources—IoT devices, APIs, relational databases—adds layers of heterogeneity and complexity.
Functional and Data Complexity: Understanding the underlying business functionality, data formats, and relationships demands deep domain expertise. For instance, deriving meaningful relationships or identifying unique keys involves detailed analysis and often iterative manual effort.
Time, Skill Shortages, and Documentation: Extensive data profiling, metadata understanding, and documentation processes significantly delay project timelines. Furthermore, there's a scarcity of skilled personnel with both domain knowledge and data modeling skills.