Database Redesign If a database is built correctly the first time, it will not have to be redesigned. True False True False ANSWER DOWNLOAD EXAMIANS APP
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 SQL-92 standard SQL command can be used to change a table name? RENAME TABLE ALTER TABLE CHANGE TABLE None of these RENAME TABLE ALTER TABLE CHANGE TABLE None of these ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The NOT EXISTS keyword will be true if: neither of these two conditions is met. both of these two conditions are met. all rows in the subquery fail the condition. any row in the subquery meets the condition. neither of these two conditions is met. both of these two conditions are met. all rows in the subquery fail the condition. any row in the subquery meets the condition. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign How can you find rows that do not match some specified condition? EXISTS None of these NOT EXISTS Double use of NOT EXISTS EXISTS None of these NOT EXISTS Double use of NOT EXISTS ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The data model that is produced from reverse engineering is: an internal model. None of these a conceptual model. a logical model. an internal model. None of these a conceptual model. a logical model. ANSWER DOWNLOAD EXAMIANS APP
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