Databricks Certified Data Engineer - Associate
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To ensure optimal performance and management of large-scale data, it's crucial to understand how Delta tables are structured and organized. Given this, which of the following describes the storage organization of a Delta table?
Exam-Like
A
Delta tables are stored in a single file that contains data, history, metadata, and other attributes.
B
Delta tables store their data in a single file and all metadata in a collection of files in a separate location.
C
Delta tables are stored in a collection of files that contain data, history, metadata, and other attributes.
D
Delta tables are stored in a collection of files that contain only the data stored within the table.
E
Delta tables are stored in a single file that contains only the data stored within the table.
Explanation:
Delta tables are stored in a collection of files that contain data, history, metadata, and other attributes. This organization allows versioning, transactional capabilities, and metadata tracking in Delta Lake. The data is typically stored in Parquet files, while transaction logs and metadata are maintained separately in a '_delta_log' folder, ensuring consistency and enabling complex features like time travel and ACID transactions.
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