Managing Databases with Oracle Which statement about sequences is not true? NextVal and CurrVal are both sequence methods. A sequence is an object that generates a sequential series of unique numbers. Sequences are most often used to provide values for surrogate keys. Sequences guarantee valid surrogate key values. NextVal and CurrVal are both sequence methods. A sequence is an object that generates a sequential series of unique numbers. Sequences are most often used to provide values for surrogate keys. Sequences guarantee valid surrogate key values. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle To see the contents of the SQL*Plus buffer, type: CURRENT CONTENTS BUFFER LIST CURRENT CONTENTS BUFFER LIST ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle After a table has been created, its structure can be modified using the SQL command: CHANGE TABLE [TableName]. ALTER TABLE [TableName]. MODIFY TABLE [TableName]. UPDATE TABLE [TableName]. CHANGE TABLE [TableName]. ALTER TABLE [TableName]. MODIFY TABLE [TableName]. UPDATE TABLE [TableName]. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle An Oracle System Change Number (SCN): 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. is a value that is incremented whenever database changes are made. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Which of the following is not true about indexes? Indexes are created to enable fast retrieval by column values. Indexes are created to enforce uniqueness on columns. Indexes are created with the ALTER TABLE command. Columns that are frequently used with equal conditions in WHERE clauses are good candidates for indexes. Indexes are created to enable fast retrieval by column values. Indexes are created to enforce uniqueness on columns. Indexes are created with the ALTER TABLE command. Columns that are frequently used with equal conditions in WHERE clauses are good candidates for indexes. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle Which SQL phrase is not supported by Oracle? ON UPDATE CASCADE ON DELETE CASCADE CREATE SEQUENCE [SequenceName] DROP SEQUENCE [SequenceName] ON UPDATE CASCADE ON DELETE CASCADE CREATE SEQUENCE [SequenceName] DROP SEQUENCE [SequenceName] ANSWER DOWNLOAD EXAMIANS APP
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