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You Are On Multi Choice Question Bank SET 926

46301. Which of the following allows dirty reads, nonrepeatable reads and phantom reads to occur?





46302. Which of the following locks the item from access of any type?





46303. The size of a lock is called:





46304. A cursor type in which the application sees the data as they were at the time the cursor was opened is called:





46305. What is the overall responsibility of the DBA?





46306. Locks placed by the DBMS are called ________ .





46307. Resource locking is a process to prevent multiple applications from obtaining copies of the same record when the record is about to be changed.



46308. The overall responsibility of the DBA is to facilitate the development and use of the database.



46309. The size of the lock is referred to as the lock granularity.



46310. A durable transaction is one in which all committed changes are permanent.



46311. An ACID transaction is one that is atomic, consistent isolated, and durable.



46312. When one transaction reads a changed record that has not been committed to the database a filthy read occurs.



46313. The size of a lock is referred to as lock sizing.



46314. When two transactions are being processed against the database at the same time they are termed concurrent transactions.



46315. Locks placed by the DBMS are explicit locks.



46316. In optimistic locking, the assumption is made that conflict will occur.



46317. Two transactions that run concurrently and generate results that are consistent with the results that would have occurred if they had run separately are referred to as serializable transactions.



46318. The lost update problem is when User A reads data that have been processed by a portion of a transaction from User B.



46319. The transaction log contains a copy of every database record (or page) after it has changed. These records are called before images.



46320. Database administration refers to a function that applies to the entire organization.



46321. Locks placed by command are implicit locks.



46322. The goal of database security is to ensure that only authorized users can perform authorized activities at authorized times.



46323. A phantom read occurs when a transaction rereads data it has previously read and finds modifications or deletions caused by a committed transaction.



46324. A transaction is a series of actions to be taken on the database so that either all of them are performed successfully or none of them are performed at all.



46325. A point of synchronization between the database and the transaction log is generally referred to as a stop point.



46326. An exclusive lock locks the item from change but not from read.



46327. Locks placed by command are called ________ .





46328. Which of the following locks the item from change but not from read?





46329. Which of the following occurs when a transaction rereads data and finds new rows that were inserted by a command transaction since the prior read?





46330. A transaction for which all committed changes are permanent is called:





46331. In this instance, dirty reads are disallowed, while nonrepeatable reads and phantom reads are allowed.





46332. Variable steering gear ratio can be achieved in the case of:





46333. Before a mechanic get under a vehicle he should make sure that:





46334. In automobile servicing concept what is meant by’Tear down’?





46335. Which is most suitable to check spark plug gap?





46336. The reading of a metric micrometer is in:





46337. A rectangle represents which of the following in an ERD?





46338. An entity name should be which of the following?





46339. An oval represents which of the following in an ERD?





46340. When the minimum and maximum number of instances of an entity is one, you know which of the following?





46341. An attribute name should be which of the following?





46342. A composite attribute is which of the following?





46343. A binary relationship cannot be which of the following?





46344. A ternary relationship involves how many entities?





46345. When the minimum number of instances of an entity is one, you know which of the following?





46346. A good business rule is which of the following?





46347. An attribute is a person, place, object, event in a user environment.



46348. Output reports should be included as part of an ERD.



46349. Cardinality specifies the number of instances of one entity that can be associated with each instance of another entity.



46350. Relationships cannot have attributes.



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