Database Redesign Typically, there should be at least two different copies of the database schema used in the redesign process. True False True False ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Some organizations take the stand that no application should ever employ the true name of a table. True False True False ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Before any changes to database structure are attempted one should first: 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. create a complete backup of the operational database only. 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. False True False True ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The SQL-92 command to change a table name is RENAME TABLE. False True False True ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Which of the following SQL statements are helpful in database redesign? 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 Both of the above are helpful None of these ANSWER DOWNLOAD EXAMIANS APP
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