Database Redesign To drop a column that is used as a foreign key, first: drop the primary key. drop the table containing the foreign key. All of these drop the foreign key constraint. drop the primary key. drop the table containing the foreign key. All of these drop the foreign key constraint. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Which is not true of a correlated subquery? They are very similar to a regular subquery. They can be used to verify functional dependencies. EXISTS/NOT EXISTS is a form of a correlated subquery. The processing of the SELECT statements is nested. They are very similar to a regular subquery. They can be used to verify functional dependencies. EXISTS/NOT EXISTS is a form of a correlated subquery. The processing of the SELECT statements is nested. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The NOT EXISTS keyword will be true if: both of these two conditions are met. neither of these two conditions is met. any row in the subquery meets the condition. all rows in the subquery fail the condition. both of these two conditions are met. neither of these two conditions is met. any row in the subquery meets the condition. all rows in the subquery fail the condition. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Which SQL-92 standard SQL command can be used to change a table name? ALTER TABLE None of these RENAME TABLE CHANGE TABLE ALTER TABLE None of these RENAME TABLE CHANGE TABLE ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Typically, there should be at least two different copies of the database schema used in the redesign process. 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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