Dataset operations:

1. Select dataset

   This is used to select another dataset other than current dataset to perform join, union operations, and more.

2. Split dataset

   This is used to split a single dataset into multiple datasets based on the method specified by the user.

   1. Row Based Split:

      Dataset will be split based on the ratio given by the user.
      Example:
      If dataset has 8 rows, ratio 1:3:4 will split dataset into 3 datasets containing 1, 3 and 4 rows respectively.

   2. Column Based Split:

      Dataset will be split using the column chosen by the user.