Database Redesign Database redesign is especially difficult if the database has no data. False True False True 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 clearly understand the current structure and contents of the database only. test any changes on a test database only. create a complete backup of the operational database only. All of these clearly understand the current structure and contents of the database only. test any changes on a test database only. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Reverse engineering is the process of reading a database schema and producing a data model from that schema. True False True False ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The EXISTS keyword will be true if any row in the subquery meets the condition. True False True False ANSWER DOWNLOAD EXAMIANS APP
Database Redesign A tool that can help designers understand the dependencies of database structures is a: graphical display. data model. None of these dependency graph. graphical display. data model. None of these dependency graph. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The NOT EXISTS keyword will be true if: any row in the subquery meets the condition. all rows in the subquery fail the condition. neither of these two conditions is met. both of these two conditions are met. any row in the subquery meets the condition. all rows in the subquery fail the condition. neither of these two conditions is met. both of these two conditions are met. ANSWER DOWNLOAD EXAMIANS APP
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