Database Redesign A correlated subquery is processed as a nested subquery. False True False True ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Although creating test databases is a critical and necessary job, there are few career opportunities in this area. True False True False ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Adding null columns to a table is straightforward. True False True False ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Before any changes to database structure are attempted one should first: create a complete backup of the operational database only. All of these test any changes on a test database only. clearly understand the current structure and contents of the database only. create a complete backup of the operational database only. All of these 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 Database redesign is especially difficult if the database has no data. False True False True ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Which of the following modifications may not succeed? Changing a column data type from char to date Changing a column data type from numeric to char Both of the above actions should succeed Neither of the above actions will succeed Changing a column data type from char to date Changing a column data type from numeric to char Both of the above actions should succeed Neither of the above actions will succeed ANSWER DOWNLOAD EXAMIANS APP
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