Question

Pre-join projection is equivalent to ________ as in traditional relational systems

Answer 1

pre_join production is equivalent to discipline as in tradition relational systems

Answer 2

Prejoin production is equivalent to disciple as in tradition relational systems. The projects are stored in all sort orders that makes it every disk read and able to fetch many things.

A pre-join projection stores the results which are obtained as far joining a single fact table. It is identified with composite primary keys for true pre-join projection and consider to define under fact table.