A Document Type Definition (DTD) is a set of markup declarations that define a document type for an SGML-family markup language (SGML, XML, HTML).
A DTD uses a terse formal syntax that declares precisely which elements and references may appear where in the document of the particular type, and what the elements' contents and attributes are. A DTD can also declare entities which may be used in the instance document.
Well-formed XML means that the XML is correct (it has only one root node, and all elements match an end element tag)Valid XML means that the XML can be validated to an XML Schema or DTD, and that all the tags in the XML are also in the Schema or DTD, and in the right place.
what is different between internal dtd and external dtd and advantages and disadvantage plz tell me answer
difference between internal and external dtd
DTD - TV station - was created on 2008-04-28.
Building blocks of a DTD, and therefore of XML and HTML documents is;ElementsAttributesEntitiesPCDATACDATA
TTEE is an abbreviation for trustee. DTD may stand in for "Dated".
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A starflake schema is a combination of a star schema and a snowflake schema. Starflake schemas are snowflake schemas where only some of the dimension tables have been denormalized. hardkingofflirt@gmail.com
The schema is the physical arrangement of the data as it appears in the DBMS. The subschema is the logical view of the data as it appears to the application program.
Physical schema,logical schema and sub schemas
xml stands for extensible markup language, xml is a markup language that is used to transfer data / information. Dtd stands for document type definitionand dtd is used to define the legal building blocks of an XML document.
Schema is a noun.