SQL vs NoSQL: Are there any differences?
SQL is an acronym for Structured
Query Language. If this will surely not help you to understand the whole thing,
there is still the last word that can guide you: Language. Indeed, SQL is a
language that you will use to query relational databases
SQL databases use a system that is
capable of compiling an SQL query and returning the data you requested. This is
called an RDBMS for Relational Database Management System. The best known RDBMS
In your life as a data analyst , you will mostly use MySQL or PostgreSQL because these two systems are open-source and thus free.
Relational databases derive their name from the fact that the data are
arranged in tables and that these tables are linked by a "relation"
called a key. This key is nothing more than a column in each table that
represents nothing more than an ID
The major advantages of using SQL databases are:
Robustness of databases.
- ü The data are well structured and thus easily retrievable.
Easier to analyze data from SQL databases
SQL is a language that is used quite extensively.
SQL databases are comparatively inexpensive. In many cases, cloud platforms
such as AWS do not load databases before introducing 2 GB of data. This is
already a beautiful volume.
Here are the two main faults of SQL databases:
Table rigidities. Usually, once the tables are defined, it is harder to
The SQL database interface is quite complicated. If you don’t know how to
code in SQL, it will be difficult for you to access your data, unlike an excel
sheet, for example, where you just need to open the file.
What does NoSQL mean?
As developers developed web applications, they needed to be more
flexible. This is why we invented another way to store and query data that was
later named “Not only SQL” or NoSQL.
Unlike SQL databases, this time there is no concept of relationship between
tables and these look more like JSON files.
Some of the most famous NoSQL databases are:
The major advantages of using NOSQL
ü Availability of data
ü May include all types of data.
ü Capable of handling Big Data.
ü They integrate more easily
with web applications
There are three default NOSQL values you should know:
ü There is no relation between
the tables as difficult to link the data.
ü NoSQL databases are not easily
integrated with SQL databases.
ü Though NoSQL databases may be
used in Big Data problems, they are often very expensive.
SQL vs NoSQL
that you have a better idea of what SQL and NoSQL are, when should you choose
The major differences between them
us discuss the main differences between the two types of data bases:
SQL databases are more organized, NoSQL databases are more flexible.
databases are more frequently used by web applications.
databases can be used to perform analyses where it is very uncommon to do so
directly from NoSQL databases.
in NoSQL databases are never related to one another, whereas tables in SQL
- zineb bougriche
- Mar, 25 2022