Managing Multiuser Databases The goal of database security is to ensure that only authorized users can perform authorized activities at authorized times. True False True False ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases An exclusive lock locks the item from change but not from read. False True False True ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Which of the following allows dirty reads, nonrepeatable reads and phantom reads to occur? Read committed Repeatable read Read uncommitted Serializable Read committed Repeatable read Read uncommitted Serializable ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases What is the overall responsibility of the DBA? Facilitate the development and use of the database Create and populate tables Both the first and third answers above are correct. Development, operation, and maintenance of the database and its applications Facilitate the development and use of the database Create and populate tables Both the first and third answers above are correct. Development, operation, and maintenance of the database and its applications ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Dirty read, nonrepeatable, and phantom reads are not possible in this instance. Serializable Repeatable read Read uncommitted Read committed Serializable Repeatable read Read uncommitted Read committed ANSWER DOWNLOAD EXAMIANS APP
Managing Multiuser Databases Locks placed by command are called ________ . explicit locks shared locks implicit locks exclusive locks explicit locks shared locks implicit locks exclusive locks ANSWER DOWNLOAD EXAMIANS APP
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