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שוני בתשובות של EXTERNAL MERGE

+1 vote
24 views
היי

למה התשובות לשאלה 3 בשני המבחנים האלו שונות?

(פה בסעיף ב)
http://courses.cs.tau.ac.il/databases/oldtests/DB1314B-solution.pdf

(פה בסעיף א)
http://courses.cs.tau.ac.il/databases/oldtests/DB1415B-solution.pdf
asked Feb 3, 2018 by tikitak (2,970 points)

1 Answer

+1 vote

I think that in the second one it could be B/3 instead of B-

(They started with merging every block separately, but they could also merge 3 blocks at a time and improve it)

answered Feb 3, 2018 by Assaf (31,090 points)
אמרו לי מה הבעיה
הראשון הוא external merge join והשני הוא 2-way. קצת מבלבל שגם בשני הוסיפו את המילה external
Oh, I didn't notice that. Thanks!
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