Exam (elaborations)
CPA NOsql Exam With Complete Solutions Latest Update
- Course
- Institution
CPA NOsql Exam With Complete Solutions Latest Update...
[Show more]
Content preview
CPA NOsql Exam With Complete Solutions Latest UpdateWhat is semi-structured data? - ANSWER "Data whose schema changes often, such as
JSON and XML."
Why does the relational model sometimes overkill with atomic data types? - ANSWER
Because applications may require to store complex data which can be simpler w/o
normalization.
What are common uses of semi-structured data? - ANSWER Data exchange between
applications or between back-end and front-end of an application.
What are two popular semi-structured data models? - ANSWER JSON and XML.
What is the most distinctive characteristic of semi-structured data models? - ANSWER
Flexible schema where each tuple can have a different set of attributes.
What are multi-valued data types? - ANSWER "Data types such as sets, multisets,
key-value maps, and arrays."
What is a key-value map? - ANSWER "A set of key-value pairs, e.g. {(brand, Apple), (ID,
MacBook Air), (size, 13), (color, silver)}."
What operations are available on key-value maps? - ANSWER "put(key, value), get(key),
delete(key)."
What is an array database? - ANSWER A database offering specific support for arrays
which may include features such as compressed storage and query language extension.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Easton. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67163 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now