Database Redesign Which of the following SQL statements are helpful in database redesign? Both of the above are helpful EXISTS/NOT EXISTS expressions only None of these Correlated subqueries only Both of the above are helpful EXISTS/NOT EXISTS expressions only None of these Correlated subqueries only ANSWER DOWNLOAD EXAMIANS APP
Database Redesign What SQL command can be used to delete columns from a table? 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 MODIFY TABLE TableName DROP ColumnName MODIFY TABLE TableName DROP COLUMN ColumnName ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Database redesign is not terribly difficult if the: database is well-designed. database is structured. database is relatively small. database has no data. database is well-designed. database is structured. database is relatively small. database has no data. ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Which SQL-92 standard SQL command can be used to change a table name? RENAME TABLE None of these CHANGE TABLE ALTER TABLE RENAME TABLE None of these CHANGE TABLE ALTER 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: database design. data modeling. reverse engineering. None of these database design. data modeling. reverse engineering. None of these ANSWER DOWNLOAD EXAMIANS APP
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