Difference between revisions of "CNM Cloud Databases"

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:Using the [[relational model]], you may create separate folders for various categories and sort your documents according those categories. Then, you can organize different folders, let say, alphabetically. This approach would wonderfully work if your documents are standardized. Now, how would you organize one document that belongs of different categories? Or a journal that contains various documents? They wouldn't fit the model.
 
:Using the [[relational model]], you may create separate folders for various categories and sort your documents according those categories. Then, you can organize different folders, let say, alphabetically. This approach would wonderfully work if your documents are standardized. Now, how would you organize one document that belongs of different categories? Or a journal that contains various documents? They wouldn't fit the model.
  
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:If you use the opposite approach, you would just put stickers on the documents and bookmarks in the folders. In that way, you have no trouble with various types of documents, but, when you look for them, you may miss something.
  
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  [[WorldOpp Middleware]] collects most important data from various ''systems'' throughout the [[CNM Cloud Foundation]], transforms the collected data in a unified format, and stores the data in its [[NoSQL]] database. The [[CNM Cyber Team]] decides on what data shall be collected, transformed, and stored.
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:When it comes to [[data management]], the [[relational model]] is generally more [[effective]], but [[NoSQL]] is more [[efficient]]. If the data is well-structured, the [[relational model]] is preferable. If the data is loosely organized or not organized at all, the [[NoSQL]] is the best.
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:To secure data from disasters such as computer failures and other [[data loss event]]s, all the data is backed up at the same time every day. At [[CNM Cloud]], that means that the database data is copied and stored separately from the [[computing server]] on which the database is installed. In that way, the [[data backup]] wouldn't be destroyed if one ''server'' collapses.
 
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:For different ''systems'', the backup policies may vary, but the backup system always contains several copies of all data that the [[CNM Cyber Team]] considers worth saving. For instance, the system may contain backups that were made yesterday, a day before yesterday, last week, and last month. Commonly, one "old" backup is deleted when one new backup is made.
 
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:As a disaster recovery, any data copy can substitute the original data in the database. However, no data backup cannot restore the data that have been created after the backup was made.
 
  
 
'''[[Data in the Foundation]]''' is the successor [[lectio]].
 
'''[[Data in the Foundation]]''' is the successor [[lectio]].

Revision as of 20:17, 20 September 2020

CNM Cyber

Databases of CNM Cloud (hereinafter, the Lectio) is the lesson part of the Cloud Foundation Essentials lesson that introduces its participants to CNM Cloud. This lesson belongs to the Introduction to CNM Cloud session of the CNM Cyber Orientation.


Content

The predecessor lectio is What the Foundation Is.

Key terms

Script

In information technology, any database is the collection of data that is stored and can be accessed digitally by an authorized software system. If special applications can handle their data, software repositories may serve as databases. However, the overwhelming majority of databases represent database management systems (or DBMSes). Usually, a DBMS not only stores and returns, but also capture and analyze the data.
The CNM Cloud Foundation features two types of database management systems.
One type utilizes relational model. Relational database management systems (RDBMSes) strictly organize their data. It is stored in tables and the tables are inter-connected in specified ways. Structured query languages {SQLs) are used to retrieve the data from relational databases of CNM Cloud.
Distributed Database Management System (DDBMS) is another type. This type relies on NoSQL model. NoSQL refers to not-only-SQL. Its data is loosely organized, so makes its management quicker, but less reliable than data management in relational models.
To compare these two type, imagine that you need to organize your documents.
Using the relational model, you may create separate folders for various categories and sort your documents according those categories. Then, you can organize different folders, let say, alphabetically. This approach would wonderfully work if your documents are standardized. Now, how would you organize one document that belongs of different categories? Or a journal that contains various documents? They wouldn't fit the model.
If you use the opposite approach, you would just put stickers on the documents and bookmarks in the folders. In that way, you have no trouble with various types of documents, but, when you look for them, you may miss something.
When it comes to data management, the relational model is generally more effective, but NoSQL is more efficient. If the data is well-structured, the relational model is preferable. If the data is loosely organized or not organized at all, the NoSQL is the best.

Data in the Foundation is the successor lectio.

Questions

Lectio quiz

The answer is recorded for the lectio completion purpose:

Placement entrance exam

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