更新する1Z1-922復習テキスト & 合格スムーズ1Z1-922テストトレーニング | 真実的な1Z1-922対応問題集練習資料は通常、試験に必要な試験問題を復習、練習、および記憶するためのツールと見なされ、それらに多くの時間を費やすことで、勝つ可能性を高めることができます。ただし、当社の1Z1-922トレーニング資料は、従来の練習資料よりも条件が良く、効果的に使用できます。 1Z1-922実践ガイドが非常に多くのヘルプを提供できるように、ヘルプを提供することが主な責任であると考えています。最も一般的なのは、1Z1-922試験問題の効率性です。 20〜30時間勉強します。 Oracle MySQL Implementation Associate 認定 1Z1-922 試験問題 (Q313-Q318):質問 # 313
What is the purpose of the InnoDB Lock Monitor?
A. To track query execution times
B. To manage query cache usage
C. To monitor table and row-level locks within InnoDB
D. To log database backups
正解:C
解説:
The InnoDB Lock Monitor helps track table and row-level locks within InnoDB, providing valuable information about lock contention and helping to optimize performance in multi-user environments.
質問 # 314
Which MySQL datatype would be most appropriate for storing a social security number?
A. VARCHAR
B. INT
C. FLOAT
D. DECIMAL
正解:A
解説:
VARCHAR is the best datatype for storing a social security number because it often contains non- numeric characters such as hyphens, and the number itself is not used in calculations.
質問 # 315
Which MySQL keyword is used to ensure that a column's value is unique across all rows?
A. INDEX
B. UNIQUE
C. DISTINCT
D. NOT NULL
正解:B
解説:
The UNIQUE constraint ensures that all values in a column are unique across all rows in a table, preventing duplicates.
質問 # 316
How do you specify the character set for a database in MySQL when creating it?
A. CREATE DATABASE db_name DEFAULT CHARSET 'utf8';
B. CREATE DATABASE db_name CHARSET=utf8;
C. CREATE DATABASE db_name DEFAULT CHARSET=utf8;
D. CREATE DATABASE db_name CHARSET 'utf8';
正解:C
解説:
To specify the character set during database creation, use DEFAULT CHARSET=utf8 (or any other desired character set) in the CREATE DATABASE statement.
質問 # 317
Which MySQL Enterprise Edition feature is useful for online backups of large databases?
A. MySQL Dump
B. MySQL Replication
C. MySQL Enterprise Backup
D. MySQL Shell
正解:C
解説:
MySQL Enterprise Backup allows for online, non-blocking backups of large databases, making it a valuable tool for enterprises that need to minimize downtime and data loss during backup operations.