Data and Database Administration Concurrency control is important for which of the following reasons? To ensure data integrity while reading data occurs to the database in a multiuser environment To ensure data integrity when updates occur to the database in a multiuser environment To ensure data integrity when updates occur to the database in a single-user environment To ensure data integrity while reading data occurs to the database in a single-user environment To ensure data integrity while reading data occurs to the database in a multiuser environment To ensure data integrity when updates occur to the database in a multiuser environment To ensure data integrity when updates occur to the database in a single-user environment To ensure data integrity while reading data occurs to the database in a single-user environment ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration Data modeling and database design are key responsibilities of data and data base administration. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration A shared lock allows which of the following types of transactions to occur? Insert Delete Read Update Insert Delete Read Update ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration Incorrect data is easy to detect. False True False True ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration The transaction log includes which of the following? The essential data of the record The before-image of a record The before and after-image of a record The after-image of a record The essential data of the record The before-image of a record The before and after-image of a record The after-image of a record ANSWER DOWNLOAD EXAMIANS APP
Data and Database Administration A transaction log shows before and after images of records that have been modified by transactions. False True False True ANSWER DOWNLOAD EXAMIANS APP