Examlex
Using an outer join produces this information: rows that do not have matching values in common columns are not included in the result table.
Industry
The production of goods or related services within an economy, or a specific sector of production or trade.
Irreversibility
The cognitive incapacity in early childhood to understand that actions, once performed, can be undone to return to the original state.
Mental Undo
The cognitive process of reversing or attempting to reverse the effects of one’s earlier actions or decisions.
Piaget
Jean Piaget was a Swiss psychologist known for his pioneering work in child development, particularly his theory of cognitive development that describes how children develop intellectually throughout the course of childhood.
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