Add Concepts: Keywords

content/mysql/concepts/keywords/keywords.md

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+---
+Title: 'Keywords'
+Description: 'MySQL keywords are predefined words that have special meaning in the SQL language and are used to perform various operations within the database.'
+Subjects:
+  - 'Code Foundations'
+  - 'Data Science'
+  - 'Data Visualization'
+Tags:
+  - 'MySQL'
+  - 'Data'
+CatalogContent:
+  - 'learn-sql'
+  - 'paths/analyze-data-with-sql'
+  - 'paths/data-science'
+  - 'paths/data-science-foundations'
+---
+
+MySQL **keywords** are predefined words that have special meaning in the SQL language. They are used to perform various operations within the database, such as creating tables, inserting data, querying the database, updating records, and more. Examples of MySQL keywords include SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, and ALTER.
+
+## Importance and Usage
+
+Keywords define the structure and syntax of SQL queries. They help organize the commands in a way that the MySQL database can interpret and execute. Each keyword performs a specific function such as selecting data (`SELECT`), inserting new records (`INSERT`), or modifying existing records (`UPDATE`).
+Using keywords ensures that your SQL queries are standarized, this enhances readability and maintainability of your code. 
+
+## Syntax
+
+### CREATE
+
+```SQL
+CREATE TABLE table_name (
+    column1 datatype,
+    column2 datatype,
+    ...
+);
+```
+
+### INSERT
+
+```SQL
+INSERT INTO table_name (column1, column2, ...)
+VALUES (value1, value2, ...);
+```
+
+### SELECT
+
+```SQL
+SELECT column1, column2, ...
+FROM table_name
+WHERE condition;
+```
+
+### UPDATE
+
+```SQL
+UPDATE table_name
+SET column1 = value1, column2 = value2, ...
+WHERE condition;
+```
+
+### DELETE
+
+```SQL
+DELETE FROM table_name
+WHERE condition;
+```
+
+
+## Example
+
+### CREATE
+
+```SQL
+CREATE TABLE employees (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    first_name VARCHAR(50),
+    last_name VARCHAR(50),
+    position VARCHAR(100),
+    salary DECIMAL(10, 2),
+    hire_date DATE
+);
+```
+
+### INSERT
+
+```SQL
+INSERT INTO employees (first_name, last_name, position, salary, hire_date)
+VALUES ('John', 'Doe', 'Software Engineer', 75000.00, '2024-05-25');
+```
+
+### SELECT
+
+```SQL
+SELECT first_name, last_name
+FROM employees
+WHERE position = 'Software Engineer';
+```
+
+### UPDATE
+
+```SQL
+UPDATE employees
+SET salary = 80000.00
+WHERE id = 1;
+```
+
+### DELETE
+
+```SQL
+DELETE FROM employees
+WHERE id = 1;
+```
+
+
+## Best Practices
+
+**Consistent formatting**: Always write keywords in uppercase for better readability
+
+**Proper naming conventions**: Avoid using keywords as names for tables or coumns. If necessary use, use backticks to avoid syntax errors.
+
+**Comprehensive understanding**: Familiarize yourself with the list of reserved keywors to avoid unintentional errors in yout SQL queries.
+
+Check the complete list [MySQL Documentation](https://dev.mysql.com/doc/refman/8.0/en/keywords.html) for more details!