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j2ee Q&A part 26
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: 4
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291. What is SQL/J
A set of standards that includes specifications for
embedding SQL statements in methods in the Java
programming language and specifications for calling
Java static methods as SQL stored procedures and
user-defined functions. An SQL checker can detect
errors in static SQL statements at program development
time, rather than at execution time as with a JDBC
driver.
292. What is SSL
Secure Socket Layer. A security protocol that provides
privacy over the Internet. The protocol allows
client-server applications to communicate in a way
that cannot be eavesdropped upon or tampered with.
Servers are always authenticated, and clients are
optionally authenticated.
293. What is stateful session bean
A session bean with a conversational state.
294. What is stateless session bean
A session bean with no conversational state. All
instances of a stateless session bean are identical.
295. What is system administrator
The person responsible for configuring and
administering the enterprise's computers, networks,
and software systems.
296. What is tag
In XML documents, a piece of text that describes a
unit of data or an element. The tag is distinguishable
as markup, as opposed to data, because it is
surrounded by angle brackets (< and >). To treat such
markup syntax as data, you use an entity reference or
a CDATA section.
297. What is template
A set of formatting instructions that apply to the
nodes selected by an XPath _expression.
298. What is tool provider
An organization or software vendor that provides tools
used for the development, packaging, and deployment of
J2EE applications.
299. What is transaction attribute
A value specified in an enterprise bean's deployment
descriptor that is used by the EJB container to
control the transaction scope when the enterprise
bean's methods are invoked. A transaction attribute
can have the following values: Required, RequiresNew,
Supports, NotSupported, Mandatory, or Never.
300. What is transaction
An atomic unit of work that modifies data. A
transaction encloses one or more program statements,
all of which either complete or roll back.
Transactions enable multiple users to access the same
data concurrently.
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