Managing Databases with Oracle Which statement about sequences is not true? Sequences guarantee valid surrogate key values. A sequence is an object that generates a sequential series of unique numbers. NextVal and CurrVal are both sequence methods. Sequences are most often used to provide values for surrogate keys. Sequences guarantee valid surrogate key values. A sequence is an object that generates a sequential series of unique numbers. NextVal and CurrVal are both sequence methods. Sequences are most often used to provide values for surrogate keys. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Which of the following is not true of SQL views? Oracle views are created using the standard SQL-92 CREATE VIEW command. Oracle views cannot use the ORDER BY clause in view definitions. Oracle views can by queried. 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 cannot use the ORDER BY clause in view definitions. Oracle views can by queried. The SQL-92 standard does not allow the use of the ORDER BY clause in view definitions. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Which prefixes are available to Oracle triggers? Both :new and :old :new only Neither :new nor :old :old only Both :new and :old :new only Neither :new nor :old :old only ANSWER DOWNLOAD EXAMIANS APP
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 After a table has been created, its structure can be modified using the SQL command: UPDATE TABLE [TableName]. MODIFY TABLE [TableName]. ALTER TABLE [TableName]. CHANGE TABLE [TableName]. UPDATE TABLE [TableName]. MODIFY TABLE [TableName]. ALTER TABLE [TableName]. CHANGE TABLE [TableName]. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Oracle maintains a System Change Number (SCN) which is a database-wide value that is incremented by Oracle whenever database changes are made. True False True False ANSWER DOWNLOAD EXAMIANS APP
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