Database Redesign What SQL command can be used to delete columns from a table? MODIFY TABLE TableName DROP ColumnName MODIFY TABLE TableName DROP COLUMN ColumnName ALTER TABLE TableName DROP ColumnName ALTER TABLE TableName DROP COLUMN ColumnName MODIFY TABLE TableName DROP ColumnName MODIFY TABLE TableName DROP COLUMN ColumnName ALTER TABLE TableName DROP ColumnName ALTER TABLE TableName DROP COLUMN ColumnName ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Database redesign is especially difficult if the database has no data. False True False True ANSWER DOWNLOAD EXAMIANS APP
Database Redesign A regular subquery is processed from the bottom up. True False True False ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The process of reading a database schema and producing a data model from that schema is known as: database design. None of these reverse engineering. data modeling. database design. None of these reverse engineering. data modeling. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The EXISTS keyword will be true if: both of these two conditions are met. all rows in the subquery fail the condition only. neither of these two conditions is met. any row in the subquery meets the condition only. both of these two conditions are met. all rows in the subquery fail the condition only. neither of these two conditions is met. any row in the subquery meets the condition 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
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