What is a long-living transaction?
A. has a human in the loop
B. has a long loop
C. has a long time
D. has an infinite loop - A. has a human in the loop
In the service Discovery pattern, how do a client and service communicate with each
other?
A. The client communicates directly with the service
B. The client communicates directly with the service by a serviceHandle sent from a
Broker
C. The client communicates indirectly with the service through a Broker
D. The client communicates directly with the service without a Broker - A. The client
communicates directly with the service
White page brokering is useful when a service requester:
A. Needs to discover the location of the service
B. Knows the type of service required but not the specific service
C. Knows the specific service required but not the type of service
D. knows the service required but not the location - D. knows the service required but
not the location
Yellow pages brokering is useful when a service requester:
A. Needs to discover the location of the service
B. Knows the type of service required but not the specific service
C. Knows the specific service required but not the type of service
D. Needs to discover the broker - B. Knows the type of service required but not the
specific service
When only the superclass in the generalization/specialization relationship is mapped to
the relational table.Which of the following is NOT true?
A. All the subclass attributes are brought up to the superclass table
B. The discriminator is added as an attribute of the superclass table
C. This approach can be used if the superclass has many attributes, each subclass has
only a few attributes,and there are a small number (two or three) of subclasses
D. The superclass table includes only attributes of the superclass and attributes of
subclasses - D. The superclass table includes only attributes of the superclass and
attributes of subclasses
What does a connector join?
A. The provided port of one component to the required port of another component
, B. The provided port of one component to the provided port of another component
C. The required port of one component to the provided port of another component
D. The required port of one component to the required port of another component - C.
The required port of one component to the provided port of another component
What is a compound transaction?
A. The compound transaction is indivisible.
B. The compound transaction is atomic.
C. The compound transaction is decomposed into atomic transactions.
D. The compound transaction is decomposed into subatomic transactions. - C. The
compound transaction is decomposed into atomic transactions.
What is a database wrapper class?
A. A class that encapsulates a data structure
B. A class that encapsulates a database
C. A class that encapsulates the details of how to access data in a database
D. A class that encapsulates a relational table - C. A class that encapsulates the details
of how to access data in a database
Yellow pages brokering is useful when a service requester:
A. Needs to discover the location of the service
B. Knows the type of service required but not the specific service
C. Knows the specific service required but not the type of service
D. Needs to discover the broker - B. Knows the type of service required but not the
specific service
What does a component's required interface consist of?
A. The operations that a component must fulfill
B. The operations inside a component
C. The operations that a component uses
D. The visible operations of a component - B. The operations inside a component
With a Negotiation pattern, which of the following is NOT true?
A. The client agent can propose a service.
B. The service agent can offer a service in response to a client agent proposal.
C. The client agent can request a service.
D. The service agent can offer a service in response to a client agent request. - D. The
service agent can offer a service in response to a client agent request.
When the superclass and all of the subclasses in generalization/specialization
relationship are mapped to relational tables. Which of the following is true?
A. The same primary key is used in the superclass and the subclass tables.
B. Each table has a different primary key
C. The same primary key is used in the subclass tables.
D. The primary key of the superclass table is a foreign key in subclass tables - D. The
primary key of the superclass table is a foreign key in subclass tables
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller VasilyKichigin. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.48. You're not tied to anything after your purchase.
