Database Redesign The data model that is produced from reverse engineering is: None of these a logical model. an internal model. a conceptual model. None of these a logical model. an internal model. a conceptual model. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign It is not easy to build a database correctly the first time. True False True False ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The NOT EXISTS keyword will be true if: 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. neither of these two conditions is met. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign How can you find rows that do not match some specified condition? Double use of NOT EXISTS NOT EXISTS EXISTS None of these Double use of NOT EXISTS NOT EXISTS EXISTS None of these ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Which of the following modifications may not succeed? Changing a column data type from char to date Changing a column data type from numeric to char Both of the above actions should succeed Neither of the above actions will succeed Changing a column data type from char to date Changing a column data type from numeric to char Both of the above actions should succeed Neither of the above actions will succeed ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The 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 only. all rows in the subquery fail the condition only. both of these two conditions are met. neither of these two conditions is met. any row in the subquery meets the condition only. all rows in the subquery fail the condition only. ANSWER DOWNLOAD EXAMIANS APP
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