question archive 1) What are the differences between structured, semi-structured, and unstructured data? 2) Explain XML uses for semi-structured data 3) Explain why XML may be useful for the transfer of structured data from one database to another
1) What are the differences between structured, semi-structured, and unstructured data? 2) Explain XML uses for semi-structured data 3) Explain why XML may be useful for the transfer of structured data from one database to another
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1) What are the differences between structured, semi-structured, and unstructured data?
2) Explain XML uses for semi-structured data
3) Explain why XML may be useful for the transfer of structured data from one database to another. Consider such aspects as to whether there is a standardized relational format for data transfer, existence of libraries, and human readability.
4) Can XML documents be queried like relational databases, and if so, how fast and convenient is the process expected to be?
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Answer:
What are the differences between structured, semi-structured, and unstructured data?
| Unstructured Data | Structured Data | Semi Structured Data |
| It includes text and multimedia content | It concerns all data which can be stored in database SQL in table with rows and columns | Semi-structured data is information that doesn’t reside in a relational database but that does have some organizational properties that make it easier to analyze |
| It represents above 80% of world's data | It represents above 5-10% of world's data | It represents above 10-15% of world's data |
| For example images, videos, sonar data, satellite images... comes under unstructures data | SQL, tables, databases... comes under structured data. | JSON, CSV, XML comes under semi structures data. |
| This type of data cannot be processed easily. It requires various algorithms to get processed | This data can be processed very easily as they contain a relational key to map the data. | The semi structured data is easy compute but mapping them take less time when compared to unstructured data. |
Explain XML uses for semi-structured data.
--> XMlL stands for Extinsible Markup Language.
--> As XMl is semi structured it very flexible to read and observe data for the servers.
--> Meta data provided can be used by every individual when needed.
--> XML is used to decribe the data, hence the semi structured way helps to self describe the embedded data very easily.
Explain why XML may be useful for the transfer of structured data from one database to another.
--> Data exchange has long been an issue in information technology, but the Internet has elevated its importance by using XML for Data exchange
--> The 4 main central problems in data exchange are capture, storage, retrieval, and exchange of data.
-->Many computer systems contain data in incompatible formats and it is a time consuming factor.
--> So , XML schema allows for the exchange of information in a standardized structure which helps in resolving all the barriers.
--> Mostly conversion of XML to relational data is much easier than any other approach.
Consider such aspects as to whether there is a standardized relational format for data transfer, existence of libraries, and human readability.
-->XML is the reliable and flexible aspect for data exchange.
-->as conversion of any relational data to XML data or vice versa is easier, it is proved that XML is the standardized format for data transfer and human readability.
--> XML has a wide data regarding libraries to process data present int he world.
Can XML documents be queried like relational databases, and if so, how fast and convenient is the process expected to be?
Yes, we can convert the XML data to relational data very easily. as XML has a very definite structure it is efficiently used for proceesing an converting data to a relational approach.
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