Database Systems Exam MCQs – Practice Test 4 (Chapter 17)
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Free "Query Optimization Notes" App Download: Histograms can be computed using; MCQ with answers: average of data, population, sampling, and hard data. Practice Indexing in DBMS Quiz Questions, download Kobo e-Book (Free Chapter) to build technical foundation.
MCQ 16: The operations of theta-join are:
MCQ 17: Histograms can be computed using:
MCQ 18: Keeping a materialized view up-to-date with respect to the underlying data is known as:
MCQ 19: Modern database systems provide more direct support for:
MCQ 20: The two expressions generate the same set of tuples on every legal database instance, the relational expressions are said to be:
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