Database Redesign To drop a column that is used as a foreign key, first: All of these drop the primary key. drop the table containing the foreign key. drop the foreign key constraint. All of these drop the primary key. drop the table containing the foreign key. drop the foreign key constraint. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Database redesign is especially difficult if the database has no data. True False True False 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 A regular subquery can be processed: from the bottom up. None of these from the top down. by nesting. from the bottom up. None of these from the top down. by nesting. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The data model produced from the reverse engineering process is a true logical model. False True False True ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Which of the following SQL statements are helpful in database redesign? EXISTS/NOT EXISTS expressions only Both of the above are helpful Correlated subqueries only None of these EXISTS/NOT EXISTS expressions only Both of the above are helpful Correlated subqueries only None of these ANSWER DOWNLOAD EXAMIANS APP
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