Database Redesign A regular subquery is processed from the bottom up. True False True False ANSWER DOWNLOAD EXAMIANS APP
Database Redesign If a database is built correctly the first time, it will not have to be redesigned. False True False True ANSWER DOWNLOAD EXAMIANS APP
Database Redesign How many copies of the database schema are typically used in the redesign process? One Three Two Four One Three Two Four ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Before any changes to database structure are attempted one should first: All of these create a complete backup of the operational database only. test any changes on a test database only. clearly understand the current structure and contents of the database only. All of these create a complete backup of the operational database only. test any changes on a test database only. clearly understand the current structure and contents of the database only. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Which of the following SQL statements are helpful in database redesign? Correlated subqueries only Both of the above are helpful EXISTS/NOT EXISTS expressions only None of these Correlated subqueries only Both of the above are helpful EXISTS/NOT EXISTS expressions only None of these ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Because of the importance of making data model changes correctly, many professionals are ________ about using an automated process for database redesign. ambivalent skeptical optimistic None of these ambivalent skeptical optimistic None of these ANSWER DOWNLOAD EXAMIANS APP
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