Interview Questions.

Question 1. What Is Rdf?

Answer :

RDF”the Resource Description Framework”is a standard version for information interchange on the Web. RDF has functions that facilitate facts merging even supposing the underlying schemas range, and it in particular supports the evolution of schemas over time without requiring all the facts consumers to be changed.

Question 2. What Formats Can Rdf Be Represented In?

Answer :

RDF statements (or triples) may be encoded in some of extraordinary codecs, whether or not XML based totally (e.G., RDF/XML) or no longer (Turtle, N-triples). In wellknown it does no longer honestly count number which of those formats (or serializations) are used to explicit statistics”the statistics is represented in RDF triples and the particular format is handiest the syntactic sugar. Most RDF equipment can parse several of these serialization formats.

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Question 3. Is Not Rdf Simply An Xml Application?

Answer :

No. The fundamental version of RDF is impartial of XML. RDF is a model describing qualified (or named) relationships among two (Web) resources, or between a Web useful resource and a literal. At that fundamental level, the handiest commonality between RDF and the XML World is using the XML Schema datatypes to signify literals in RDF. In truth, the usage of GRDDL, a way to automate mappings from XML to RDF easily, many XML vocabularies may be taken into consideration packages of RDF.

Question 4. How Can I Query Rdf Data?

Answer :

The W3C Data Access Working Group has developed the SPARQL Query Language. SPARQL defines queries in phrases of graph patterns which might be matched in opposition to the directed graph representing the RDF facts. SPARQL includes abilties for querying required and optionally available graph patterns at the side of their conjunctions and disjunctions. The end result of the fit also can be used to construct new RDF graphs the use of separate graph styles.

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Question 5. What Is The Semantic Web?

Answer :

The Semantic Web is a Web of records. There is lots of facts all of us use every day, and it's no longer a part of the Web. For example, I can see my bank statements at the internet, and my pix, and I can see my appointments in a calendar. But can I see my photos in a calendar to look what I become doing when I took them? Can I see bank announcement traces in a calendar? Why no longer? Because we do not have an internet of facts. Because information is controlled by means of packages, and every utility continues it to itself.

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Question 6. What Are The Major Building Blocks Of The Semantic Web?

Answer :

In order to acquire the desires defined above, the maximum critical is with the intention to define and describe the family members among facts (i.E., resources) on the Web. This isn't not like the use of hyperlinks at the current Web that join the current page with every other one: the links defines a relationship among the present day web page and the target. One major difference is that, on the Semantic Web, such relationships can be installed among any  resources, there may be no belief of cutting-edge page. Another principal difference is that the connection (i.E, the hyperlink) itself is known as, whereas the link utilized by a human at the (traditional) Web isn't always and their function is deduced by the human reader. The definition of those family members allow for a higher and automated interchange of records. RDF, which is one of the fundamental building blocks of the Semantic Web, gives a formal definition for that interchange.

Question 7. What Other Work Has Been Done With Microformats And Rdf?

Answer :

XFN at the GRDDL 
GRDDL specification up to date works with Microformats
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Question eight. What Is The Killer Application For The Semantic Web?

Answer :

It is hard to expect what a killer application is for a specific technology, and the prediction is frequently faulty. That stated, the combination of presently unbound and unbiased silos of data in a coherent software is truely an excellent candidate. Specific examples are presently explored in regions like Health Care and Life Sciences, Public Administration, Engineering, and so forth.

Question nine. Will I See The Semantic Web In My Everyday Browser?

Answer :

Not necessarily, at least not directly. The Semantic Web technology can also act backstage, ensuing in a better person revel in, rather than without delay influencing the appearance at the browser.

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Question 10. When Should I Use Rdf And When Should I Use Xml?

Answer :

Both formalisms have their strengths and weaknesses; their region of utilization is distinctive. The  statistics models serve distinct constituencies and the selection in reality relies upon at the utility. There is not any better or worse; simplest one of a kind.

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Question eleven. Does The Semantic Web Require Me To Manually Markup All The Existing Web-pages, Or To Convert All The Data In Relational Databases Into Rdf?

Answer :

The Semantic Web is about an internet of information. The data itself can reside in databases, spreadsheets, Wiki pages, or certainly conventional internet pages. The undertaking is to increase tools which can export those information into RDF form: RDF performs the function of a not unusual model, as a type of a glue to combine the statistics. That does no longer suggest that the information must be physically transformed into RDF form and stored in, say, RDF/XML. Instead, automatic approaches, as an instance SQL to RDF converters for relational databases, GRDDL processors for XHTML documents with microformats, RDFa, and so forth, can produce RDF data on-the-fly as a solution to, eg, queries.

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Question 12. How Do I Put Rdf Into My (x)html Pages?

Answer :

Until lately, it changed into no longer viable to incorporate complete RDF into XHTML without violating the validity of the ensuing XHTML, except for the usage of the meta and the hyperlink elements in the header. The first-class solution become to store the RDF one after the other and use the URIs to refer to the XHTML page and the hyperlink element inside the XHTML page to consult the RDF content. This technique is regularly known as an RDF autodiscovery hyperlink and is used by a number of equipment already. However, this has modified with the more moderen developements of GRDDL and of RDFa. The GRDDL provides a bridge to the microformats technique at the same time as RDFa provides an XHTML1.1 module that offers the possibility to apply virtually any RDF vocabulary as annotations of the XHTML content, yielding RDF information.

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Question thirteen. Why Rdf Is Designed?

Answer :

RDF become designed to offer a not unusual manner to describe data so it is able to be read and understood via pc applications.
RDF descriptions aren't designed to be displayed at the internet.
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Question 14. How Rdf Is Written?

Answer :

RDF documents are written in XML. The XML language utilized by RDF is referred to as RDF/XML.
By the usage of XML, RDF information can without problems be exchanged between specific types of computers the use of different types of operating systems and alertness languages.
Question 15. When Rdf Is Recommended By W3c?

Answer :

RDF became a W3C Recommendation 10. February 2004.

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Question sixteen. Define Rdf Resource?

Answer :

A Resource is anything that may have a URI, inclusive of: "http://www.Wisdomjobs.Com/rdf"

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Question 17. Define Rdf Property?

Answer :

A Property is a Resource that has a name, which include "writer" or "homepage".

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Question 18. List The Rdf Rules?

Answer :

RDF makes use of Web identifiers (URIs) to become aware of sources.
RDF describes resources with houses and assets values.
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Question 19. Define Rdf Property Value?

Answer :

A Property price is the cost of a Property, including "XYZ" or "http://www.Wisdomjobs.Com" (be aware that a belongings fee can be another useful resource)

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Question 20. Define Rdf Main Elements?

Answer :

The predominant elements of RDF are the foundation element, <RDF>, and the <Description> detail, which identifies a resource.

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Question 21. Give A Brief Overview Of Rdf?

Answer :

RDF is a fashionable version for records interchange on the Web. RDF has features that facilitate information merging despite the fact that the underlying schemas fluctuate, and it especially helps the evolution of schemas over time without requiring all of the information consumers to be modified.

Question 22. What Is Rdf Schema?

Answer :

RDF Schema (Resource Description Framework Schema, variously abbreviated as RDFS, RDF(S), RDF-S, or RDF/S) is a hard and fast of classes with positive properties the usage of the RDF extensible information representation records version, supplying simple factors for the description of ontologies, in any other case called RDF vocabularies, supposed to shape RDF sources. These sources can be saved in a triplestore to attain them with the question language SPARQL.

Question 23. Define Rdf And The Semantic Web?

Answer :

The RDF language is part of the W3C's Semantic Web Activity.

W3C's "Semantic Web Vision" is a destiny where:

Web facts has genuine meaning
Computers can combine information from the web
Web statistics may be understood and processed by way of computers
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Question 24. List Some Examples Of Rdf Use?

Answer :

Describing time schedules for web activities
Describing properties for buying items, inclusive of fee and availability
Describing content material for engines like google
Describing electronic libraries
Describing data approximately web pages (content, writer, created and changed date)
Describing content material and rating for internet pics
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Question 25. Where We Use Rdf?

Answer :

RDF is used to describe residences(like: price, availability,exceptional and so on.)
This is also used to describe the time schedules of net elements.
This is also used to describe some data about web pages like content material,writer,created and changed date.
Using this we will describe digital libraries.
Using this we are able to describe the content material for search engines like google.
Using this we can also describe content material and score for web pics.
Question 26. What Are The Rdf Rules?

Answer :

To identify net identifiers(URIs) uses RDF.Also the usage of RDF we are able to describe resources with residences and their respected values.

Resource: resouces is some thing that have a URI.Like: "http://www.Wisdomjobs.Com/RDF"
Property: It is a resource than could have call like: "writer" or "homepage".
Property fee: It is used to define the cost of belongings. Like: "XXXX" or "http://www.Wisdomjobs.Com"
Example: I outline you RDF via using an instance.

<?Xml version="1.0"?>
<RDF>
  <Description about="http://www.Wisdomjobs.Com/RDF">
    <author>XXXX</author>
    <homepage>http://www.Wisdomjobs.Com</homepage>
  </Description>
</RDF>

 

Web semantic Interview Questions
Question 27. How You Define Statements In Rdf?

Answer :

Statement is an blended shape of a Resource, a property and a assets fee those are also called as difficulty, predicate and item of a declaration.

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Question 28. What Is Rdf Online Validator?

Answer :

Using on-line RDF validator you could parse your RDF record,can also test your syntax and also to generate tabular and graphical view of our RDF file.

I have given you a example of RDF Validator.

<?Xml version="1.0"?>
<rdf:RDF
xmlns:rdf="http://www.W3.Org/1999/02/22-rdf-syntax-ns#" 
xmlns:si="http://www.Wisdomjobs.In/siteinfo#">
  <rdf:Description rdf:about="http://www.Wisdomjobs.Co.In/RDF">
   <si:author>XXXXl</si:author>
   <si:homepage>http://www.Wisdomjobs.Co.In</si:homepage>
  </rdf:Description>

</rdf:RDF>

Question 29. Tell Me About Terms In Rdf?

Answer :

To describe the factors of container we've got to speak approximately list of values attach with container.
In RDF we stated all list of values members.To do not forget that, We used container to save the matters. Things(no longer the list of values)that are contained via field are advised as individuals.  
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Question 30. How Owl Is Different With Rdf?

Answer :

We can say that their is no a good deal greater distinction b/w OWL and RDF.However foremost distinction b/w each OWL and RDF is that OWl is an stronger language which has awesome interoperability with device than RDF.

Also OWL has a big collection than RDF.
Syntax of OWL is tons stronger than RDF.