What is a release methodology? Why is version control important?
What will be an ideal response?
Under a release methodology, all noncritical changes are held until they can be implemented at the same time. Each change is documented and installed as a new version of the system called a maintenance release. When a release method is used, a numbering pattern distinguishes the different releases. In a typical system, the initial version of the system is 1.0, and the release that includes the first set of maintenance changes is version 1.1. A change, for example, from version 1.4 to 1.5 indicates relatively minor enhancements, while whole number changes, such as from version 1.0 to 2.0, or from version 3.4 to 4.0, indicates a significant upgrade.
A release methodology offers several advantages, especially if two teams perform maintenance work on the same system. When a release methodology is used, all changes are tested together before a new system version is released. The release methodology also reduces costs, because only one set of system tests is needed for all maintenance changes. This approach results in fewer versions, less expense, and less interruption for users. Using a release methodology also reduces the documentation burden.
Version control is the process of tracking system releases. Typically, when a new version is released, it is archived by a systems librarian who is responsible for archiving current and previously released versions of the system. Using version control, in the event of major system failure, the company can reinstate the prior version for system recovery. Version control also allows one individual to track version changes.
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A data entry form is usually a(n) ____________________ form that displays data from the fields in its record source.
Fill in the blank(s) with the appropriate word(s).
Process A issues its send operation prior to process B issues its receive operation.
Process A sends a single message to process B using connectionless IPC. To do so, A issues a send operation (specifying the message as argument) sometime during its execution, and B issues a receive operation. Suppose the send operation is blocking and the receive operation is non-blocking. Draw an event diagram (not sequence diagram) for each of the following scenario:
Write a fragment of code that will change the integer value stored in x as follows. If x is even, divide x by 2. If x is odd, multiply x by 3 and subtract 1.
What will be an ideal response?
What will be displayed when the following code is executed?
int number = 6; while (number > 0) { number -= 3; System.out.print(number + " "); } a. 6 3 0 b. 6 3 c. 3 0 d. 3 0 -3 e. 0 -3