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j2ee Q&A part 3
Posted Date: 20 Mar 2008 Resource Type: Articles/Knowledge Sharing Category: Placement Papers
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Posted By: ramya Member Level: Gold
Rating:  Points: 5
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41. What is commit
The point in a transaction when all updates to any
resources involved in the transaction are made
permanent.
42. What is component contract
The contract between a J2EE component and its
container. The contract includes life-cycle management
of the component, a context interface that the
instance uses to obtain various information and
services from its container, and a list of services
that every container must provide for its components.
43. What is component-managed sign-on
A mechanism whereby security information needed for
signing on to a resource is provided by an application
component.
44. What is connector
A standard extension mechanism for containers that
provides connectivity to enterprise information
systems. A connector is specific to an enterprise
information system and consists of a resource adapter
and application development tools for enterprise
information system connectivity. The resource adapter
is plugged in to a container through its support for
system-level contracts defined in the Connector
architecture.
45. What is Connector architecture
An architecture for integration of J2EE products with
enterprise information systems. There are two parts to
this architecture: a resource adapter provided by an
enterprise information system vendor and the J2EE
product that allows this resource adapter to plug in.
This architecture defines a set of contracts that a
resource adapter must support to plug in to a J2EE
product-for example, transactions, security, and
resource management.
51. What is context attribute
An object bound into the context associated with a
servlet.
52. What is context root
A name that gets mapped to the document root of a Web
application.
53. What is conversational state
The field values of a session bean plus the transitive
closure of the objects reachable from the bean's
fields. The transitive closure of a bean is defined in
terms of the serialization protocol for the Java
programming language, that is, the fields that would
be stored by serializing the bean instance.
54. What is CORBA
Common Object Request Broker Architecture. A
language-independent distributed object model
specified by the OMG.
55. What is create method
A method defined in the home interface and invoked by
a client to create an enterprise bean.
56. What is credentials
The information describing the security attributes of
a principal.
57. What is CSS
Cascading style sheet. A stylesheet used with HTML and
XML documents to add a style to all elements marked
with a particular tag, for the direction of browsers
or other presentation mechanisms.
58. What is CTS
Compatibility test suite. A suite of compatibility
tests for verifying that a J2EE product complies with
the J2EE platform specification.
59. What is data
The contents of an element in an XML stream, generally
used when the element does not contain any
subelements. When it does, the term content is
generally used. When the only text in an XML structure
is contained in simple elements and when elements that
have subelements have little or no data mixed in, then
that structure is often thought of as XML data, as
opposed to an XML document.
60. What is DDP
Document-driven programming. The use of XML to define
applications.
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