Database Redesign Which of the following SQL statements are helpful in database redesign? 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 Both of the above are helpful ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Which is not true of a correlated subquery? The processing of the SELECT statements is nested. EXISTS/NOT EXISTS is a form of a correlated subquery. They can be used to verify functional dependencies. They are very similar to a regular subquery. The processing of the SELECT statements is nested. EXISTS/NOT EXISTS is a form of a correlated subquery. They can be used to verify functional dependencies. They are very similar to a regular subquery. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The process of reading a database schema and producing a data model from that schema is known as: data modeling. None of these database design. reverse engineering. data modeling. None of these database design. reverse engineering. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Correlated subqueries are similar to a regular subquery. False True False True ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The NOT EXISTS keyword will be true if: 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. any row in the subquery meets the condition. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The NOT EXISTS keyword will be true if any row in the subquery meets the condition. True False True False ANSWER DOWNLOAD EXAMIANS APP
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