Questions

Another name for false productivity is Spinning your wheels. They use the term for false productivity because your wheels are spinning as you're doing work but you're not going anywhere i.e, making any progress.

The difference between Union and Union all is that Union all will not eliminate duplicate rows, instead it just pulls all rows from all tables fitting your query specifics and combines them into a table. A UNION statement effectively does a SELECT DISTINCT on the results set.

Piyush Goel

Logical address space is generated from CPU; it bound to a separate physical address space is central to proper memory management. Physical address space is seen by the memory unit. Logical address space is virtual address space. Both these address space will be same at compile time but differ at execution time.

All my bosses enchanted some skills worth learning. I have always used to learn something new from them along with my ex-boss.

Something that saves your money is cost-effective and is also called as economical.

If an object moves with some velocity that means the magnitude and direction of the object changes i.e, the object moves with some acceleration. Hence, if the object moves with constant velocity, no change in direction and magnitude of speed i.e, no acceleration = 0 acceleration.