Partitioning is not necessary in Delta Lake as it automatically optimizes queries without any manual intervention.

Partitioning can be implemented by manually creating separate Delta tables for each partition value, leading to increased management overhead.

Partitioning in Delta Lake is achieved by using the PARTITIONED BY clause in the CREATE TABLE statement, which organizes data into subdirectories based on the specified column, enhancing query performance.

Partitioning requires the use of external tools to organize data into partitions, as Delta Lake does not support native partitioning features.