Managing Databases with Oracle Sequences guarantee valid surrogate key values. True False True False ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle An Oracle System Change Number (SCN): is a value that keeps track of explicit locks. is a value that is incremented whenever a dirty read occurs. is a value that is incremented whenever database changes are made. is incremented whenever a deadlock occurs. is a value that keeps track of explicit locks. is a value that is incremented whenever a dirty read occurs. is a value that is incremented whenever database changes are made. is incremented whenever a deadlock occurs. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Which of the following is not true of SQL views? Oracle views cannot use the ORDER BY clause in view definitions. The SQL-92 standard does not allow the use of the ORDER BY clause in view definitions. Oracle views are created using the standard SQL-92 CREATE VIEW command. Oracle views can by queried. Oracle views cannot use the ORDER BY clause in view definitions. The SQL-92 standard does not allow the use of the ORDER BY clause in view definitions. Oracle views are created using the standard SQL-92 CREATE VIEW command. Oracle views can by queried. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Oracle directly supports the definition of surrogate keys. False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle You can use the DROP statement to remove structures from the database. False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Which of the following is not true about modifying table 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 increase the number of characters in character columns or the number of digits in numeric columns You can drop a column at any time. 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 increase the number of characters in character columns or the number of digits in numeric columns You can drop a column at any time. ANSWER DOWNLOAD EXAMIANS APP
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