Which of the following JPA-related statements is false? a) Once a transaction is committed, the changes...
Which of the following JPA-related statements is false?
a) Once a transaction is committed, the changes to the entity are saved to the database.
b) You can delete an existing entity.
c) You can update an existing entity by modifying its entity object in the context of a transaction.
d) When you commit a transaction the entity is kept as a backup in the database.
Homework Answers
d) When you commit a transaction the entity is kept as a backup in the database
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Which of the following JPA-related statements is false?
a) Once a transaction is committed, the changes...
For each of the following statements, circle T (True) or F (False) Serial execution of a...
For each of the following statements, circle T (True) or F (False) Serial execution of a set of transactions is guaranteed to preserve database consistency. When using the two-phase locking protocol, two transactions can hold shared locks on the same data element at the same time. The recovery manager ensures the Atomicity property of a transaction by committing all operations of aborted transactions. A B+ tree index, that starts a root node, is rarely used in a relational database. Deadlocks...
Which of the following statements is false with respect to committed fixed costs? Multiple Choice They...
Which of the following statements is false with respect to committed fixed costs? Multiple Choice They represent organizational investments with a multiyear planning horizon. They should not be reduced for short periods of time because the costs of restoring them later would most likely exceed any cost savings realized in the short term. They usually arise from annual decisions by management to spend on certain fixed cost items. They remain constant, in total, regardless of changes in the level of...
Which of the following statements about physical and chemical changes is FALSE? In a physical change,...
Which of the following statements about physical and chemical changes is FALSE? In a physical change, matter does not change its composition. O Inachemical change, matter changes its composition. O Phase changes are always physical changes. O Chemical reactions are chemical changes. None of these are false
Which of the following statements is false? The moment of inertia of an object depends on...
Which of the following statements is false? The moment of inertia of an object depends on the location of its axis of rotation The moment of inertia of an object depends on the angular acceleration of the object as it rotates An object can continue to rotate in the absence of torque An applied net torque may reduce the angular speed of an object Of the particles that make up an object, the particle with the smallest mass may contribute...
Question 3 (Mandatory) (1 point) Which of the following statements is false? a) Changes in variable...
Question 3 (Mandatory) (1 point) Which of the following statements is false? a) Changes in variable costs are reflected dollar-for-dollar in changes in total cost. b) Fixed costs exist in the short run, but not in the long run. c) Marginal cost is the cost of producing an additional unit of output. d) Since (total) fixed costs are constant as output changes in the short run, it follows that average fi- constant in the short run. Question 4 (Mandatory) (1...
Which of the following statements is false? A)With respect to fund basis financial statements, a government...
Which of the following statements is false? A)With respect to fund basis financial statements, a government may designate any fund to be a major fund if reporting that fund separately would be useful. B)When preparing fund basis financial statements, any funds not reported separately are aggregated and reported in a single column under the label non-major funds. C)When preparing fund basis financial statements, any funds not reported separately are reported by function. D)In addition to the government-wide statements, governments are...
Under fair-value accounting for an equity investment, which of the following statements is false? a. An...
Under fair-value accounting for an equity investment, which of the following statements is false? a. An entity may choose the fair value election for an equity investment only if it is irrevocable. b. Under the fair value option, changes in fair value are recorded in earnings. c. Under the fair value option, the Investment account would be adjusted for the change in fair value. d. Under the fair value option, the entity would reduce the investment account for its share...
Garden Glory Project Questions The following Garden Glory database design is used in Chapter 3: OWNER...
Garden Glory Project Questions The following Garden Glory database design is used in Chapter 3: OWNER (OwnerID, OwnerName, OwnerEmail, OwnerType) PROPERTY (PropertyID, PropertyName, Street, City, State, Zip, OwnerID) EMPLOYEE (EmployeeID, LastName, FirstName, CellPhone, ExperienceLevel) SERVICE (PropertyID, EmployeeID, SeviceDate, HoursWorked) The referential integrity constraints are: OwnerID in PROPERTY must exist in OwnerID in OWNER PropertyID in SERVICE must exist in PropertyID in PROPERTY EmployeeID in SERVICE must exist in EmployeeID in EMPLOYEE Garden Glory has modified the EMPLOYEE table by adding...
6. Which of the following statements regarding Mergers and Acquisition transaction structures are false? a) The...
6. Which of the following statements regarding Mergers and Acquisition transaction structures are false? a) The consideration payable to the seller can include several components b) The consideration payable to the seller can only include one component, either cash or shares c) The buyer always retains a fraction of the payable consideration to cover for future unexpected issues d) The seller provides the buyer with representations and warranties which are deemed to offer some additional comfort about the status of...
subject. Database system i need the answer for 8 & 9 please. 8. Improve the performance and backup plan for the CUNY database. This database student records enrolled in 24 Colleges. Propose...
subject. Database system
i need the answer for 8 & 9 please.
8. Improve the performance and backup plan for the CUNY database. This database student records enrolled in 24 Colleges. Propose four recommendations to correct or ems identified. You have no budget to purchase additional hardware. You need to make recommendations using hardware already available (15 points) includes 400,000 You will be evaluated based on your improvements in a) performance, b) security, c) backup and d) hardware utilization. You...
For each of the following statements, circle T (True) or F (False) Serial execution of a set of transactions is guaranteed to preserve database consistency. When using the two-phase locking protocol, two transactions can hold shared locks on the same data element at the same time. The recovery manager ensures the Atomicity property of a transaction by committing all operations of aborted transactions. A B+ tree index, that starts a root node, is rarely used in a relational database. Deadlocks...
Which of the following statements about physical and chemical changes is FALSE? In a physical change, matter does not change its composition. O Inachemical change, matter changes its composition. O Phase changes are always physical changes. O Chemical reactions are chemical changes. None of these are false
Which of the following statements is false? The moment of inertia of an object depends on the location of its axis of rotation The moment of inertia of an object depends on the angular acceleration of the object as it rotates An object can continue to rotate in the absence of torque An applied net torque may reduce the angular speed of an object Of the particles that make up an object, the particle with the smallest mass may contribute...
Question 3 (Mandatory) (1 point) Which of the following statements is false? a) Changes in variable costs are reflected dollar-for-dollar in changes in total cost. b) Fixed costs exist in the short run, but not in the long run. c) Marginal cost is the cost of producing an additional unit of output. d) Since (total) fixed costs are constant as output changes in the short run, it follows that average fi- constant in the short run. Question 4 (Mandatory) (1...
subject. Database system
i need the answer for 8 & 9 please.
8. Improve the performance and backup plan for the CUNY database. This database student records enrolled in 24 Colleges. Propose four recommendations to correct or ems identified. You have no budget to purchase additional hardware. You need to make recommendations using hardware already available (15 points) includes 400,000 You will be evaluated based on your improvements in a) performance, b) security, c) backup and d) hardware utilization. You...
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