Managing Databases with Oracle Indexes are created to enforce uniqueness on columns and to enable fast retrieval by column values. False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Which SQL phrase is not supported by Oracle? ON DELETE CASCADE ON UPDATE CASCADE DROP SEQUENCE [SequenceName] CREATE SEQUENCE [SequenceName] ON DELETE CASCADE ON UPDATE CASCADE DROP SEQUENCE [SequenceName] CREATE SEQUENCE [SequenceName] ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle What is the type of Oracle backup in which all uncommitted changes have been removed from the datafiles? Consistent backup Differential backup Full backup Inconsistent backup Consistent backup Differential backup Full backup Inconsistent backup ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle An Oracle System Change Number (SCN): is a value that is incremented whenever database changes are made. is a value that keeps track of explicit locks. is incremented whenever a deadlock occurs. is a value that is incremented whenever a dirty read occurs. is a value that is incremented whenever database changes are made. is a value that keeps track of explicit locks. is incremented whenever a deadlock occurs. is a value that is incremented whenever a dirty read occurs. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Which of the following is not true about modifying table columns? You can add a column at any time as long as it is a NULL column. You can drop a column at any time. You can increase the number of characters in character columns or the number of digits in numeric columns You cannot increase or decrease the number of decimal places. You can add a column at any time as long as it is a NULL column. You can drop a column at any time. You can increase the number of characters in character columns or the number of digits in numeric columns You cannot increase or decrease the number of decimal places. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Oracle does NOT support a CASCADE UPDATE constraint. False True False True ANSWER DOWNLOAD EXAMIANS APP
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