What are the advantages and disadvantages of left-deep trees?
What will be an ideal response?
The inner relation of a join needs to be examined for each tuple of the outer relation, so inner
relations must always be materialized. With a left-deep tree, the inner relation is always a base
relation, and so already materialized.
You might also like to view...
When a TableCell’s Text property contains the empty string, the TableCell displays ________ in Design mode.
a) ??? b) 0 c) !!! d) ### e) None of the above. The Cell displays nothing.
Which OSI layer combines messages or segments into packets?
What will be an ideal response?
In a preliminary investigation report, the _____ section contains the results of the preliminary investigation, including a description of the project's scope, constraints, and feasibility.?
A. ?appendix B. ?introduction C. ?recommendations D. ?findings
The _________________________ at the bottom of the Fill Color and Font Color buttons changes to the most recently selected color.
Fill in the blank(s) with the appropriate word(s).