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Test your basic knowledge |
Enterprise Application Structure Patterns
Start Test
Study First
Subject
:
it-skills
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A well-known object that other objects can use to find common objects and services.
Registry
Unit of Work
Money
Table Module
2. A single instance that handles the business logic for all rows in a database table or view.
Service Layer
Identity Map
Foreign Key Mapping
Table Module
3. Maps an object into several fields of another object's table.
Client Session State
Layer Supertype
Embedded Value
Serialized LOB
4. A type that acts as the supertype for all types in its layer.
Application Controller
Inheritance Mappers
Layer Supertype
Page Controller
5. Keeps the session state on a server system in a serialized form.
Repository
Server Session State
Layer Supertype
Association Table Mapping
6. A subclass that provides special behavior for particular cases.
Front Controller
Value Object
Query Object
Special Case
7. An object that encapsulates access to an external system or resource.
Association Table Mapping
Service Layer
Special Case
Gateway
8. Maps an association between objects to a foreign key reference between tables.
Dependent Mapping
Metadata Mapping
Seperated Interface
Foreign Key Mapping
9. Locks a set of related objects with a single lock.
Layer Supertype
Inheritance Mappers
Identity Field
Coarse-Grained Lock
10. Provides a coarse-grained facade on fine-grained objects to improve efficiency over a network.
Client Session State
Query Object
Value Object
Remote Facade
11. Represents an inheritance hierarchy of classes as a single table that has columns for all the fields of the various classes.
Single Table Inheritance
Transform View
Table Data Gateway
Remote Facade
12. An in-memory representation of tabular data.
Identity Map
Service Layer
Metadata Mapping
Record Set
13. An object that acts as a Gateway to a single record in a data source. There is one instance per row.
Row Data Gateway
Service Stub
Association Table Mapping
Active Record
14. A centralized point for handling screen navigation and the flow of an application.
Service Stub
Application Controller
Identity Map
Page Controller
15. An object that sets up a communication between two independent objects.
Client Session State
Query Object
Coarse-Grained Lock
Mapper
16. Saves an association as a table with foreign keys to the tables that are linked by the association.
Association Table Mapping
Query Object
Record Set
Value Object
17. Defines an application's boundary with a layer of services that establishes a set of available operations and coordinates the application's response in each operation.
Service Stub
Database Session State
Service Layer
Query Object
18. Organizes business logic by procedures where each procedure handles a single request from the presentation.
Transaction Script
Service Layer
Transform View
Registry
19. Saves the database ID field in an object to maintain identity between an in-memory object and a database row.
Model View Controller
Seperated Interface
Table Module
Identity Field
20. A view that proceses domain data element by element and transforms it into HTML.
Inheritance Mappers
Query Object
Coarse-Grained Lock
Transform View
21. Represents a monetary value.
Money
Transform View
Domain Model
Unit of Work
22. An object that represents a database query.
Value Object
Query Object
Money
Special Case
23. Stores session state on the client.
Registry
Client Session State
Special Case
Optimistic Offline Lock
24. Renders information into HTML by embedding markers in an HTML page.
Transaction Script
Template View
Gateway
Model View Controller
25. A layer of Mappers that moves data between objects and a database while keeping them independent of each other and the mapper itself.
Data Transfer Object
Front Controller
Gateway
Data Mapper
26. A small simple object - like money or a date range - whose equality isn't based on identity.
Value Object
Data Mapper
Association Table Mapping
Two Step View
27. Defines an interface in a seperate package from its implementation.
Seperated Interface
Inheritance Mappers
Record Set
Application Controller
28. Prevents conflicts between concurrent business transactions by detecting a conflict and rolling back the transaction.
Optimistic Offline Lock
Application Controller
Model View Controller
Lazy Load
29. Ensures that each object gets loaded only once by keeping every loaded object in a map. Looks up objects using the map when referring to them.
Identity Map
Table Data Gateway
Domain Model
Remote Facade
30. Represents an inheritance hierarchy of classes with one table per concrete class in the hierarchy.
Service Layer
Inheritance Mappers
Page Controller
Concrete Table Inheritance
31. Has one class perform the database mapping for a child class.
Database Session State
Template View
Dependent Mapping
Concrete Table Inheritance
32. An object that carries data between processes in order to reduce the number of method calls.
Registry
Data Transfer Object
Query Object
Active Record
33. Removes dependence upon problematic services during testing.
Service Stub
Single Table Inheritance
Repository
Identity Field
34. Represents an inheritance hierarchy of classes with one table for each class.
Class Table Inheritance
Registry
Server Session State
Single Table Inheritance
35. Maintains a list of objects affected by a business transaction and coordiantes the writing out of changes and the resolution of concurrency problems.
Unit of Work
Class Table Inheritance
Model View Controller
Table Data Gateway
36. Stores session data as commited data in the database.
Dependent Mapping
Row Data Gateway
Repository
Database Session State
37. A controller that handles all requests for a Web site.
Inheritance Mappers
Optimistic Offline Lock
Class Table Inheritance
Front Controller
38. An object that handles a request for a specific page or action on a Web site.
Transaction Script
Page Controller
Database Session State
Data Transfer Object
39. An object that wraps a row in a database table or view - encapsulates the database access and adds domain logic on that data.
Identity Field
Identity Map
Lazy Load
Active Record
40. A structure to organize database mappers that handle inheritance hierarchies.
Inheritance Mappers
Page Controller
Two Step View
Dependent Mapping
41. Prevents conflicts between concurrent business transactions by allowing only one business transaction at a time to access data.
Foreign Key Mapping
Pessimistic Offline Lock
Database Session State
Table Module
42. An object that acts as a Gateway to a database table. One instance handles all the rows in the table.
Value Object
Inheritance Mappers
Transaction Script
Table Data Gateway
43. Splits user interface interaction into three distinct roles.
Inheritance Mappers
Pessimistic Offline Lock
Model View Controller
Plugin
44. An object that doesn't contain all of the data you need but knows how to get it.
Two Step View
Client Session State
Identity Field
Lazy Load
45. Allows framework or layer supertype code to acquire offline locks.
Data Mapper
Special Case
Lazy Load
Implicit Lock
46. Saves a graph of objects by serializing them into a single large object (LOB) which stores it in a database field.
Query Object
Front Controller
Remote Facade
Serialized LOB
47. An object that sets up a communication between two independent objects.
Registry
Implicit Lock
Concrete Table Inheritance
Metadata Mapping
48. An object model of the domain that incorporates both behavior and data.
Special Case
Domain Model
Serialized LOB
Embedded Value
49. Mediates between the domain and data mapping layers using a collection-like interfacefor accessing domain objects.
Single Table Inheritance
Value Object
Repository
Special Case
50. Turns domain data into HTML in two steps: first by forming some kind of logical page - then rendering the logical page into HTML.
Class Table Inheritance
Data Transfer Object
Data Mapper
Two Step View