DataFramemerge
DataFramemerge is a data processing operation used to combine two or more DataFrame-like structures by aligning their rows on common keys or indices. It is a foundational tool in data integration, feature engineering, and cleaning workflows across programming environments that manipulate tabular data.
The concept emphasizes a generalized interface that supports multiple languages and libraries, including Python-based DataFrames, R
Core features include support for inner, left, right, and outer joins; composite or multi-key joins; specification
Performance considerations depend on data size, join type, and available indices. Implementations may use hash-based or
Typical use cases include joining customer information with transactions, aligning experimental results with metadata, or combining