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.

Computer Science & Information Technology

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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.

Computer Science & Information Technology

Which OSI layer combines messages or segments into packets?

What will be an ideal response?

Computer Science & Information Technology

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

Computer Science & Information Technology

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).

Computer Science & Information Technology