feat(soft day01-02): finshied templatin day01 typescript and day02, s…

…tarted noSQL with mongoDB

software/day01/day01/Typescript/README.md

@@ -1140,7 +1140,6 @@ You'll have to update all your codebase to support those new fields.
 > And if you struggle, remember that the staff is here to help you out 😃
 
 ## Bonus
-### 📑 Description:
 First, congratulation! You've survived day 1 👏
 
 Below you'll see two bonuses to challenge you.

software/day02/1 - SQL/README.md

@@ -0,0 +1,267 @@
+# PoC Software Pool 2023 - Day 02 - SQL
+
+**Day purposes**
+
+✔️ Execute simple SQL requests.
+
+✔️ Discover database management tools.
+
+✔️ Understand the fundamentals of relational database.
+
+## Introduction
+
+During the [day 01](../../day01), you learned a programming language to 
+develop software. But a software isn't only composed of a hundred thousand
+lines of code, it's common to use external tools to take in charge a specific
+task. 😉<br>
+For example, you can use [Prometheus](https://prometheus.io)/[Grafana](https://grafana.com) to monitor your app, [Kafka](https://kafka.apache.org) as a queue or a [database](https://en.wikipedia.org/wiki/Database) to store huge amount of data...
+
+### What's a database?
+
+It's an organized space where you can store pieces of information.
+Each time you need a permanent storage, for example, to store users, you will
+need a database.<br>
+It has many usage and ways, the most popular is [SQL database](https://en.wikipedia.org/wiki/SQL) or 
+also called [relational database](https://en.wikipedia.org/wiki/Relational_database).
+
+### Type of database
+
+Today we will learn relational database but other exists:
+
+- [Document](https://en.wikipedia.org/wiki/Document-oriented_database)
+- [Graph](https://en.wikipedia.org/wiki/Graph_database)
+- [Column](https://en.wikipedia.org/wiki/Column-oriented_DBMS)
+- [Key/Value](https://en.wikipedia.org/wiki/Key–value_database)
+- [Search Engine](https://en.wikipedia.org/wiki/Database_search_engine)
+- [Multi model](https://en.wikipedia.org/wiki/Multi-model_database)
+
+> You can find more information about databases in this [post](https://fireship.io/lessons/top-seven-database-paradigms/) 😄
+
+## Requirements
+
+There are many tools to manage a database. We give you the choice between
+[DataGrip](https://www.jetbrains.com/datagrip/) and [SQL IDE Online](https://sqliteonline.com).
+
+> We recommend DataGrip for its powerful UX and easy adoption 😉
+
+In the folder [resources](./resources), you will find a file named 
+[database.sql](./resources/database.sql) to generate a new database
+with artists and musics 🎵
+
+Here's a schema of our data:
+![Artists database](../../../.github/assets/software_bdd.png)
+
+In relational database, data is stored into a [table](https://www.postgresql.org/docs/9.2/ddl-basics.html)
+where each information is a [column](https://www.postgresql.org/docs/8.0/ddl.html).
+
+You can then create a [relation](https://hasura.io/learn/database/postgresql/core-concepts/6-postgresql-relationships/)
+between tables 😄
+
+> 💡 You can find more information about PostgreSQL concepts [here](https://www.postgresql.org/docs/8.3/tutorial-concepts.html).
+
+> These concepts are important, if you are lost don't hesitate to ask the staff for help they'll be happy to help you understand 😜
+
+### DataGrip
+
+> If you don't want to use DataGrip, move to the [SQL IDE Online](#sql-ide-online) setup.
+
+First, download DataGrip using the [Jetbrains Toolbox](https://www.jetbrains.com/toolbox-app/).
+
+You can use [docker](https://www.docker.com) to run a [PostgreSQL](https://www.postgresql.org) 
+database with the following command in the directory containing the file `database.sql`
+
+```shell
+docker run  --name my_database -e POSTGRES_PASSWORD=password -e POSTGRES_USER=root -e POSTGRES_DB=my_database -p 5432:5432 -v "$(pwd)"/database.sql:/docker-entrypoint-initdb.d/init.sql -d postgres:alpine
+```
+
+> If you can't manage to connect to your database, try changing the POSTGRES_USER parameter to something else and reloading your container using ``docker rm``.
+
+> Don't worry about this command for now, you will learn docker during day04 👀
+
+Start DataGrip and create a new `Data Source` of type `PostgreSQL`.
+
+Here's the information to fill in the form:
+- Database name: `my_database`
+- Username: `root`
+- Password: `password`
+- Host: `localhost`
+- Port: `5432`
+
+> 💡 You will certainly have to download the PostgreSQL driver on your first connection.
+
+Below you have an example of configuration:
+![DataGrip configuration](../../../.github/assets/software_postresql_connection.png)
+
+
+After applying the configuration, you should see a new data source in the left panel of DataGrip.
+
+Verify that you have something similar to the example below:
+![DataGrip data source](../../../.github/assets/software_postgresql_result.png)
+
+> You can look a [these steps](https://www.jetbrains.com/help/datagrip/postgresql.html)
+> if you encounter an issue during the configuration.
+
+> 💡 If you are already familiar with You can use [pgAdmin](https://www.pgadmin.org) or 
+> [DBeaver](https://dbeaver.io) feel free to use them.
+
+### SQL IDE Online
+
+> We do not recommend this solution because it's important to use professional tools, but you can use it if you want to go fast 🏃
+
+- Go to [SQL IDE Online](https://sqliteonline.com).
+- Click on `PostgreSQL` database.
+- Click on category `File`.
+- Open `database.sql`
+- Execute it with the button `Run`.
+
+You should get the following result
+
+![sql ide online result](../../../.github/assets/software_sql_online.png)
+
+## Step 0 - Setup
+### 📑 Description:
+If you correctly followed the requirements, you should have a database
+ready to use 😍
+
+### 📌 Tasks:
+You will just need to create a new directory in your pool repository to
+submit your work:
+```shell
+mkdir -p day02
+```
+
+This day is composed of two parts, so for now you will push your work in the directory `SQL` 😉
+```shell
+mkdir -p day02/SQL
+```
+
+Create a file `queries.md` in which you will write every query you make to keep a trace:
+```shell
+touch queries.md
+```
+
+## Step 1 - Basics
+### 📑 Description:
+Your database is ready to run your first requests 🥳
+
+The goal of this step is to understand how to read data in a database using
+[SQL](https://en.wikipedia.org/wiki/SQL).
+
+Let's try to get some information from the table `artists`.
+
+### 📌 Tasks:
+Write 3 queries to :
+- Retrieve **all** the information contained in the `artists` table.
+- Retrieve **only** `name` and `genre` from the table `artists`.
+- Retrieve the list of all `artists` of `genre` `hip-hop/rap`.
+
+### 📚 Documentation:
+> See how to [read data in SQL](https://sql.sh/cours/select) or in [PostgreSQL](https://www.postgresql.org/docs/9.5/sql-select.html).
+
+## Step 2 - Relations
+### 📑 Description:
+As we said before, a relational database is perfect to handle data with 
+multiple relations between them.
+
+### 📌 Tasks:
+Let's write 3 new queries to link information from tables:
+- Retrieve `name` from `artists` and `musics`.<br>
+You must specify the name of your result column with `artists_names` and `musics_names`.
+- Retrieve all `artist` who singed in the music `We Are The World`.<br>
+Those artists must be sorted in `descending` order according to their number of fans.
+- Retrieve all the `musics` from `Booba`.<br>
+They must be sorted in `alphabetical` order.
+
+### 📚 Documentation:
+> See [how to sort data](https://docs.postgresql.fr/9.2/queries-order.html)
+> and [join in SQL](https://sql.sh/cours/jointures).
+
+## Step 3 - CRUD
+### 📑 Description:
+Yesterday, you programmed the CRUD of a resource, let's learn how to do it using SQL 💪
+
+### 📌 Tasks:
+Write 3 queries to:
+- Add a new `artist` with his `id` set to `100`.
+- Delete all musics that have the `Gold` `certification`.
+- Add the music `Take What You Want` to the `artists` you previously created.
+
+> ⚠️ `artists` and `musics` are linked using a relationship table, you
+> will maybe need to do 2 queries to delete records.
+
+### 📚 Documentation:
+> See how [create](https://www.w3schools.com/sql/sql_insert.asp) or 
+> [delete](https://www.w3schools.com/sql/sql_delete.asp) data in SQL.
+
+## Step 4 - Good counts make good friends
+### 📑 Description:
+You've learned the basics, let's see more advanced features with pre-processing SQL functions 🧐
+
+### 📚 Documentation
+You will use functions to [count elements](https://www.w3schools.com/sql/sql_count_avg_sum.asp) directly from SQL.
+
+> 💡 Databases are faster than any programming language (except C) so if you can pre-process your data in your query, do it.
+
+### 📌 Tasks:
+Write 4 new queries to:
+- Count the number of `artists`
+- Count the number of `artists` in each `genre`.
+- Count the number of `musics` sorted by their certification and displayed in ascending order.
+- Count the number of `musics` of each `artists`, sorted by their certification and 
+displayed in ascending order.
+
+> ⚠️ Be sure you never count the same music two time.
+
+> You'll certainly need to [group element in SQL](https://www.w3schools.com/sql/sql_groupby.asp) 😉
+
+## Step 5 - Rap Game
+### 📑 Description:
+You have certainly noticed, there are several kind of musics related to rap: 
+the `rap` and `hip-hop/rap`.
+
+We would like to organize a concert with all the rappers in our database, but
+for that, we need a list of them.
+### 📌 Tasks:
+Write a query that retrieve all the rappers in the database, sorted in 
+descending order by their fans' number.
+### 📚 Documentation:
+> 💡 You'll maybe need to [manipulate string](https://www.tutorialspoint.com/sql/sql-string-functions.htm) 
+> and [cast data](https://www.w3schools.com/sql/func_sqlserver_cast.asp). 
+
+## To go further
+
+Congratulation, you now have solid knowledge in SQL 🎉
+
+Here are some links for the most courageous among you:
+
+- [Organize your database with schemas](https://www.postgresql.org/docs/14/ddl-schemas.html)
+- [Create your own PostgreSQL function](https://www.postgresql.org/docs/14/xfunc-sql.html)
+- [Automate task with triggers](https://www.postgresql.org/docs/14/trigger-definition.html)
+- [Improve query performance](https://www.postgresql.org/docs/14/performance-tips.html)
+
+<h2 align=center>
+Organization
+</h2>
+<br/>
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