Answer the following statement(s) true (T) or false (F)
1. A Boolean action contains no logic for the action.
2. One disadvantage of SFC programming is that it is linear and concurrent processing cannot
be done.
3. Once an SFC ends the last step it does not automatically restart at the first step.
4. A transition can be a Boolean or can be a JSR to call another routine.
5. In an SFC program an application is broken into multiple sheets.
6. Transitions are physical conditions that must happen or change before going to the next step.
1. True
2. False
3. True
4. True
5. False
6. True
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Suppose that transactions T1 and T2 can be decomposed into the subtransactions T1 : T1,1, T1,2 and T2 : T2,1, T2,2 such that the database items accessed by T1,1 and T2,1 are disjoint from the items accessed by T1,2 and T2,2. Instead of guaranteeing that all schedules involving T1 and T2 are serializable, suppose that a concurrency control guarantees that T1,1 is always executed serializably with T2,1 and that T1,2 is always executed serializably with T2,2.
a. Will T1 always be serializable with T2? Explain. b. What minimal additional condition on the subtransactions guarantees that the effect of executing T1 concurrently with T2 is the same as a serial schedule? c. Assuming that the condition of (b) holds, what advantage does the new concurrency control have over a concurrency control that guarantees serializability?
One of the best ways to learn the user-centered development methodology is to develop a web site for an organization or for a person other than yourself. There are many places where you can find a “client” – many on-campus organizations would like to have a site that publicizes their activities. There are also many nonprofit organizations such as service organizations, theatre troupes, and religious groups that would like to set up web pages but don’t have the skills or resources to do so. Another possibility might be a city department such as a parks district who might be interested.
When you find a client who is interested, ask them what they envision for their web site. If the conversation elicits a large wish list, feel free to ask them which issues are most important to them. With this information in hand, ask your teacher to help you keep the project at a manageable size. After consulting your client and your teacher, write a needs analysis for your client. In it, give a brief description of your users and the benefits they will enjoy as a result of your new web site.
When considered as part of the attack methodology, "____________________" refers to the tools and techniques for breaking into more systems, gaining further network access, or gaining access to more resources.
Fill in the blank(s) with the appropriate word(s).
A petabyte is equal to approximately 1 billion bytes.
Answer the following statement true (T) or false (F)