SQL (Structured query language) with all its types
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Structured Query Language is a computer language that we use to interact with a relational database. SQL is a tool for organizing, managing, and retrieving archived data from a computer database. The original name was given by IBM as Structured English Query Language, abbreviated by the acronym SEQ...
Introduction to SQL
There are so many different concepts in SQL, so do you need to learn each
and everything different jobs would need a different level of SQL expert
dice, so I wanted to make this video a complete SQL roadmap where I 'm
going to mention all the different SQL concepts. You will need to. learn
based on the level of expertise you want to gain. In. SQL is basically a
programming language that is used to interact with relational databases 80
to 90 percent of the SQL that is used in all of these databases are basically
the same. The syntax is the same and concepts are the same. Whatever you
learn in one database, you will be able to apply them in any other database
you might have to use in the future. there might be 10 to 20 percent
differences. Mainly the changes might be in certain. Functions. a boot camp
on Springboard is an online platform that offers a bootcamp course related
to data analytics, data science software engineering. The course spans
around six to nine months. You can do it online part-time by spending
maybe 10 to 20 hours per week. During the span of this course, you would
of course be learning all the technical skills that are required to get into data
analytics.
,Learn What is Database | Types of Databases
| DBMS
Data is the key to the smooth functioning of everything from a government
to a local company. The success of a company vastly depends on how well
they utilize their data. Data can be anything and everything and can be in
any form such as an image or a video or a file or even a plain text. The
purpose of storing the data into the database is so it can be easily accessed,
modified, protected and analyzed. database is just a container that stores
data, but database management system is software which is used to
manage your database. The evolution of databases started in the 1960s
when the first type of database was made, which was the flight file
database... Over 74 percent of the databases used today are relational
databases, but due to rising data usage. Over the past decade, nonrelational
databases have become very popular. There are several. categories of
database such as key value store, document database, graph database, time
series database, and nonrelational database. Each database store data
differently and is useful for managing specific types of data... data is
scattered across multiple tables which are related to one another in a
relational database.
Graph database forms relation by using nodes, edges and properties. Data is
represented through individual nodes and each node can have multiple
properties between these nodes. to form a relationship. data is stored as
nodes and relationships are established to represent different types of
connections. Examples can be Cassandra edge base.
,How to install PostgreSQL on Mac OS | Install
and Uninstall PostgreSQL Database
Installing PostgreSQL database can be done in two ways: through the EDB
installer or the PostgreSQL app. Regardless of which installer you choose, it
will install PostgreSQL. If you installed PostgreSQL using EDB, you can access
it through PgAdmin. To do this, open your web browser and click on the
"servers" option on the left-hand side of the page. From there, you will be
able to see a database named "postgres." If you encounter an error message
when you first click on PgAdmin, simply create a database by entering the
name in the dialogue box. For example, you can enter "test." To shut down
PgAdmin, simply click on "shutdown" and then choose "yes." To uninstall
PgAdmin, go to the "Finder" on your computer and search for the 12th
version of PgAdmin that you installed. From there, you can uninstall it.
To download and install PostgreSQL, follow these steps: Go to
postgresql.org Click on "Download" and choose "Mac" Scroll down to
"Postgres.app" and click on it Follow the three installation steps, which
involve downloading and installing the .dmg file and clicking on the
Postgres.app If you want to use a tool with a user interface to access your
database, you'll need to install it separately. If you want to use the
command line tool to access PostgreSQL, you'll need to set up your PATH. To
do this: Copy the two commands Open your terminal and paste the
commands If you type "psql" in the terminal, it should work. You may need
to restart the terminal for changes to take effect To uninstall PostgreSQL:
Follow the appropriate uninstallation steps for the tool you used to install
PostgreSQL (e.g. the "Postgres.app") To remove PostgreSQL from your dock,
drag the icon out of the dock Leave a comment below if you have any
questions or if you know how to fix any issues.
This is how you uninstall the PostgreSQL app on your Mac: Open the Finder
app. Click on the "Applications" folder. Locate the "PostgreSQL" app. Drag
the app icon to the trash. Empty the trash. Thank you everyone, you have
, now seen how we installed PostgreSQL and uninstalled it. I hope this was
useful. If you have any questions or issues that you are facing, please leave a
comment below. I'll try to answer it as much as possible.
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