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    Devry
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Category > Programming Posted 25 May 2017 My Price 8.00

nUniversity DTD with ID and IDREF attribute types

can anyone explain this example for me , pleaseee

nUniversity DTD with ID and IDREF attribute types.
<!DOCTYPE university-3[
     <!ELEMENT university ( (department|course|instructor)+)>
     <!ELEMENT department ( building,budget )>
     <!ATTLIST department
            dept_nameID #REQUIRED >
     <!ELEMENT course (title, credits)>
     <!ATTLIST course
            course_idID #REQUIRED
            dept_nameIDREF #REQUIRED
            instructors IDREFS #IMPLIED>
     <!ELEMENT instructor ( name,salary )>
     <!ATTLISTinstructor
            IID ID #REQUIRED 
            dept_nameIDREF #REQUIRED >
     · · · declarations for title,credits, building,
            budget, name and salary · ··
]>

thanks alot.

Answers

(11)
Status NEW Posted 25 May 2017 04:05 AM My Price 8.00

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file 1495685925-Solutions file 2.docx preview (51 words )
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