XML documents. It differs from HTML, the markup language most often used to present information on the Internet. HTML has fixed tags that deal mainly with style or presentation. An XML document must undergo a transformation into a language with style tags under the control of a style sheet before it can be presented by a browser or other presentation mechanism. Two types of style sheets used with XML are CSS and XSL. Typically, XML is transformed into HTML for presentation. Although tags can be defined as needed in the generation of an XML document, a document type definition (DTD) can be used to define the elements allowed in a particular type of document. A document can be compared by using the rules in the DTD to determine its validity and to locate particular elements in the document. A Web services application's J2EE deployment descriptors are expressed in XML with schemas defining allowed elements. Programs for processing XML documents use SAX or DOM APIs.

Microsoft Windows SharePoint Services Technical security measures provide firewall protection,
intrusion detection, and web-publishing rules. The Microsoft operation center team tests and
deploys software updates in order to maintain the highest level of security and software reliability.
Software hot-fixes and service packs are tested and deployed based on their priority and level of
risk. Security related hot-fixes are rapidly deployed into the environment to address current
threats. A comprehensive software validation activity ensures software stability through regression
testing prior to deployment.

There are two Integrity rules. Entity Integrity: States that "Primary key cannot have NULL value"
Referential Integrity: States that "Foreign Key can be either a NULL value or should be Primary Key value of other relation.

A standard for specifying consistency rules that apply to the specifications contained in an RDF.

Join Dependency:

A Join dependency is generalization of Multivalued dependency.A JD {R1, R2, ..., Rn} is said to hold over a relation R if R1, R2, R3, ..., Rn is a lossless-join decomposition of R . There is no set of sound and complete inference rules for JD.

Inclusion Dependency:

An Inclusion Dependency is a statement of the form that some columns of a relation are contained in other columns. A foreign key constraint is an example of inclusion dependency.

A method of an enterprise bean that implements the business logic or rules of an application.