IBM DB2 Manual page 573

WLM application environment
A z/OS Workload Manager attribute that
is associated with one or more stored
procedures. The WLM application
environment determines the address
space in which a given DB2 stored
procedure runs.
WLM enclave
|
| A construct that can span multiple
dispatchable units (service request blocks
|
and tasks) in multiple address spaces,
|
| allowing them to be reported on and
managed by WLM as part of a single
|
| work request.
write to operator (WTO)
An optional user-coded service that
allows a message to be written to the
system console operator informing the
operator of errors and unusual system
conditions that might need to be corrected
(in z/OS).
WTO See write to operator.
WTOR
Write to operator (WTO) with reply.
XCF See cross-system coupling facility.
XES See cross-system extended services.
XML See Extensible Markup Language.
XML attribute
A name-value pair within a tagged XML
element that modifies certain features of
the element.
XML column
|
| A column of a table that stores XML
| values and is defined using the data type
XML. The XML values that are stored in
|
| XML columns are internal representations
of well-formed XML documents.
|
| XML data type
A data type for XML values.
|
XML element
A logical structure in an XML document
that is delimited by a start and an end
tag. Anything between the start tag and
the end tag is the content of the element.
| XML index
An index on an XML column that
|
provides efficient access to nodes within
|
| an XML document by providing index
keys that are based on XML patterns.
|
XML lock
|
| A column-level lock for XML data. The
operation of XML locks is similar to the
|
operation of LOB locks.
|
XML node
The smallest unit of valid, complete
structure in a document. For example, a
node can represent an element, an
attribute, or a text string.
| XML node ID index
An implicitly created index, on an XML
|
| table that provides efficient access to XML
| documents and navigation among
multiple XML data rows in the same
|
| document.
| XML pattern
A slash-separated list of element names,
|
an optional attribute name (at the end), or
|
| kind tests, that describe a path within an
XML document in an XML column. The
|
pattern is a restrictive form of path
|
| expressions, and it selects nodes that
match the specifications. XML patterns are
|
specified to create indexes on XML
|
| columns in a database.
XML publishing function
A function that returns an XML value
|
from SQL values. An XML publishing
|
| function is also known as an XML
constructor.
|
XML schema
|
| In XML, a mechanism for describing and
| constraining the content of XML files by
indicating which elements are allowed
|
| and in which combinations. XML schemas
| are an alternative to document type
definitions (DTDs) and can be used to
|
| extend functionality in the areas of data
typing, inheritance, and presentation.
|
| XML schema repository (XSR)
A repository that allows the DB2 database
|
| system to store XML schemas. When
registered with the XSR, these objects
|
have a unique identifier and can be used
|
| to validate XML instance documents.
| XML serialization function
A function that returns a serialized XML
|
string from an XML value.
|
XML table
|
| An auxiliary table that is implicitly
created when an XML column is added to
|
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Glossary