Question

Difference between external and Internal DTD

Answer 1

Answer:

Internal DTD : You can write rules inside XML document using declaration. Scope of this DTD within this document. Advantages is document validated by itself without external reference. External DTD : You can write rules in a separate file .

Answer 2

Answer:

when a DTD is declared within the file it is called internal DTD and if it is declared in a separate file it is called external DTD.