Database Redesign Which of the following SQL statements are helpful in database redesign? Both of the above are helpful None of these Correlated subqueries only EXISTS/NOT EXISTS expressions only Both of the above are helpful None of these Correlated subqueries only EXISTS/NOT EXISTS expressions 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. False True False True ANSWER DOWNLOAD EXAMIANS APP
Database Redesign How many copies of the database schema are typically used in the redesign process? Three Four One Two Three Four One Two ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Although creating test databases is a critical and necessary job, there are few career opportunities in this area. False True False True ANSWER DOWNLOAD EXAMIANS APP
Database Redesign To drop a column that is used as a foreign key, first: drop the primary key. drop the foreign key constraint. drop the table containing the foreign key. All of these drop the primary key. drop the foreign key constraint. drop the table containing the foreign key. All of these ANSWER DOWNLOAD EXAMIANS APP
Database Redesign If a database is built correctly the first time, it will not have to be redesigned. False True False True ANSWER DOWNLOAD EXAMIANS APP
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