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
Database Redesign What SQL command can be used to delete columns from a table? MODIFY TABLE TableName DROP COLUMN ColumnName ALTER TABLE TableName DROP COLUMN ColumnName ALTER TABLE TableName DROP ColumnName MODIFY TABLE TableName DROP ColumnName MODIFY TABLE TableName DROP COLUMN ColumnName ALTER TABLE TableName DROP COLUMN ColumnName ALTER TABLE TableName DROP ColumnName MODIFY TABLE TableName DROP ColumnName ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Database redesign is not terribly difficult if the: database is well-designed. database has no data. database is structured. database is relatively small. database is well-designed. database has no data. database is structured. database is relatively small. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Which SQL-92 standard SQL command can be used to change a table name? None of these CHANGE TABLE ALTER TABLE RENAME TABLE None of these CHANGE TABLE ALTER TABLE RENAME TABLE ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The process of reading a database schema and producing a data model from that schema is known as: reverse engineering. None of these data modeling. database design. reverse engineering. None of these data modeling. database design. ANSWER DOWNLOAD EXAMIANS APP
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