Database Redesign Correlated subqueries are similar to a regular subquery. False True False True ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The use of the double NOT EXISTS can be used to find rows that do not match some specified condition. 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 The data model produced from the reverse engineering process does not include intersection table data. False True False True ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The data model that is produced from reverse engineering is: a logical model. a conceptual model. an internal model. None of these a logical model. a conceptual model. an internal model. None of these ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Before any changes to database structure are attempted one should first: 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. create a complete backup of the operational database only. ANSWER DOWNLOAD EXAMIANS APP
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