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ITPROG > XML > Flashcards

XML Flashcards

1
Q

What is the meaning of XML?

A

Extensible Markup Language

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2
Q

What does XML do?

A

It describes and stores data

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3
Q

What are the characteristics of XML?

A

Flexible
Easy to share
Describes itself
Easy to extend
Vendor Independent
Platform Independent

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4
Q

Data is also known as

A

Text Node

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5
Q

Parent Node is also known as

A

Root Element

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6
Q

Book/authors/author. You can call this as a

A

Xpath otr path

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7
Q

It is a hierarchical data model

A

XML

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8
Q

Who uses XML

A

Banking
Life Sciences
Healthcare
Insurance
FInancial Markets
CrossIndustry
Chemical & Petroleum
Automotive
Retail
Electronics
Telecommunications
Energy and Utilities

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9
Q

What representation that uses node types

A

Parsed-hierarchical representation of an XML document

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10
Q

What representation uses root element, element, attribute, and text node

A

Serialized representation

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11
Q

A valid XML document is

A

A well-formed XML document
A document compliant with rules defined in an XML schema document or a document Type Definition document.

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12
Q

What is DTD document

A

Document Type Definition

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13
Q

A well-formed XML document is

A

It must have one and olny one root element
Each element begins and ends with an end tag
An element can contain other elements, attributes, or text nodes
Attribute values must be enclosed in double quotes. Text nodes, on the other hand, should not

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14
Q

It allows you to constrain the content of your XML documents (Kumbaga conditions)

A

Document Type Definition

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15
Q

It specify what kinds of content is allowed, where it is allowed to appear, and how many instances of certain type of content can appear

A

Document Type Definition

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16
Q

It can be declared directly inside the XML document or attached via an external file

A

Document Type Definition

17
Q

It is relatively simple to write, but not particularly powerful or flexible

A

Document Type Definition

18
Q

For example, to limit element content to phone numbers or integer digits, what is this example

A

Document Type Definition

19
Q

It consist of a set of markup declations that define the document’s elements, attributes, and other information

A

Document Type Definition

20
Q

What are the DTD markup declarations

A

Elements
Attributes
Entities
Notations
Processing Instructions
Comments
Parameter Entity References

21
Q

What is the format of a DTD

A

<!DOCTYPE Name [
Document Type Definition
]>
Where Name is the name of the root node of the document and the Document Type Definition defines the content rules

22
Q

What is the format for DTD Element declaration?

A

<!ELEMENT Name ContentSpecification>
Where Name is the name of the element
Content Specification defines the valid contents for the elemts

23
Q

What are the contents that Elements can contain

A

EMPTY Content
ANY Content
Element Content
Mixed Content

24
Q

Element that has no children

A

Empty Content

25
Q

Element has no content constraints

A

ANY Content

26
Q

Element can contain the listed child elements but that’s it

A

Element content

27
Q

Element can contain elements and character data

A

Mixed content

28
Q

This means zero or one of the indicated element

A

?

29
Q

This means one or more of the indicated element

A

+

30
Q

This means zero or more the indicated element

A

*

31
Q

All attributes intended for use in a document must be declared via an

A

Attribute list declaration

32
Q

An attribute list declaration has the format

A

<!ATTLIST ElemName AttrName Type DefaultDecl>

Where
ElemName is the name of the element where the attribute can be used
AttrName is the name of the attribute
Type id the attribute’s type
DefaultDecl is the default declaration

33
Q

Attribute can be

A

String type indicated by the CDATA keyword. Which means attribute can be any string
Enumerated type which means the attribute can be one of several potential values
Tokenized type

34
Q

What are the default Declaration for attributes

A

REQUIRED

#IMPLIED
Default Value
#FIXED

35
Q

What function converts an XML document to an object

A

simplexml_load_file(‘xml file’)

ITPROG (1 decks)

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