Managing Databases with Oracle Which of the following is not true about indexes? Indexes are created to enforce uniqueness on columns. Columns that are frequently used with equal conditions in WHERE clauses are good candidates for indexes. Indexes are created with the ALTER TABLE command. Indexes are created to enable fast retrieval by column values. Indexes are created to enforce uniqueness on columns. Columns that are frequently used with equal conditions in WHERE clauses are good candidates for indexes. Indexes are created with the ALTER TABLE command. Indexes are created to enable fast retrieval by column values. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle What type of failure occurs when Oracle fails due to an operating system or computer hardware failure? Rollback failure Media Failure Application failure Instance Failure Rollback failure Media Failure Application failure Instance Failure ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle When using SQL*Plus, Oracle commands, column names, table names and all other database elements: are case insensitive. are case sensitive. must always be in upper case. must always be in lower case. are case insensitive. are case sensitive. must always be in upper case. must always be in lower case. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle An Oracle System Change Number (SCN): 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. 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. ANSWER DOWNLOAD EXAMIANS APP
Managing Databases with Oracle After a table has been created, its structure can be modified using the SQL command: MODIFY TABLE [TableName]. UPDATE TABLE [TableName]. CHANGE TABLE [TableName]. ALTER TABLE [TableName]. MODIFY TABLE [TableName]. UPDATE TABLE [TableName]. CHANGE TABLE [TableName]. ALTER TABLE [TableName]. 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? Full backup Inconsistent backup Differential backup Consistent backup Full backup Inconsistent backup Differential backup Consistent backup ANSWER DOWNLOAD EXAMIANS APP
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