Use NCERT to read the theory (it is more precise), but use Sumita Arora to practice the questions . You cannot pass the Python practical paper with only NCERT.

: Introduces Relational Database Management Systems (RDBMS) and SQL commands for efficient data management.

: Sumita Arora's books are regularly updated to stay aligned with the latest CBSE syllabus and exam patterns.

Sumita Arora writes for the CBSE board. The terminology used (e.g., exactly how a "List" is defined) mirrors the CBSE marking scheme. Using this jargon in your board exam guarantees you don't lose marks for "language mismatch."