What is Microsoft SQL Server?

Microsoft SQL Server It is a relational database management system developed by Microsoft. This software is used by organizations of all sizes to manage and analyze data efficiently. The aim of this article is to explain in detail, but comprehensibly, what Microsoft SQL Server is and how it is used.

What is SQL Server used for?

Microsoft SQL Server is a comprehensive platform for data management, used for a variety of purposes:

• Data Storage : It allows to store large amounts of data in a secure and organized way.
• Data Management : It facilitates data management, including the creation, reading, updating, and deletion (CRUD) of the data itself.
• Data Analysis : It provides tools to analyze data and generate detailed reports.
• Safety It provides robust security features to protect sensitive data.
• Integration : It integrates with other software and services to improve overall functionality.

SQL Server is essential for companies that need to manage large volumes of data efficiently and securely.

What is the difference between SQL and MySQL?

SQL (Structured Query Language) is a standard language used to manage and manipulate databases. SQL Server and MySQL are both database management systems that use SQL, but they have some key differences:

• Property :

• SQL Server Developed by Microsoft, it is a commercial software with proprietary licenses.
• MySQL : Developed by Oracle Corporation, it is an open source software.

• Compatibility :

• SQL Server : Optimized for the Microsoft ecosystem, easily integrating with other Microsoft products such as Azure and Visual Studio.
• MySQL : It can be run on various platforms, including Linux, macOS and Windows.

• Functionality :

• SQL Server : It offers advanced business intelligence features, reporting and data analysis.
• MySQL Known for its simplicity and speed, often used for web applications.

• Cost :

• SQL Server : It can be expensive due to proprietary licenses.
• MySQL Being open source, it can be used for free, although there are commercial versions with additional features.

How do you make an SQL query?

SQL queries are commands used to interact with the database. Here is an example of how basic operations are performed:

Creating a table :

CREATE TABLE Customers (

ID INT PRIMARY KEY,

Name VARCHAR(50),

Surname VARCHAR(50),

Email VARCHAR(100)

);

Data Entry :

INSERT INTO Customers (ID, Name, Surname, Email)

VALUES (1, 'Mario', 'Rossi', 'mario.rossi@example.com'); (Note: This is a line of code and does not require translation as it is universally used in the same format in programming.)

Data reading :

SELECT * FROM Customers;

Data update :

UPDATE Customers

SET Email = 'mario.rossi@newdomain.com'

WHERE ID = 1;

Data deletion :

DELETE FROM Customers

WHERE ID = 1;

These fundamental operations constitute the basis of data management in a relational database.

Who usually uses SQL?

SQL Server is used by a wide range of users and organizations:

• Large companies For the management of enormous amounts of business data.
• SMEs (Small and Medium Enterprises) : To manage customer data, sales and internal operations.
• Governmental entities : To maintain records and sensitive data.
• Research Institutes : To analyze complex data.
• Software Developers : To create applications that require a robust database backend.
• Data Analysts : To extract meaningful information from the collected data.

Technical description of the variants

Microsoft SQL Server is available in several editions, each of which is designed to meet specific needs:

• SQL Server Express :

• Free version, ideal for small-scale applications.
• Limitations on database size and functionality.

• SQL Server Standard :

• Suitable for SMEs.
• It offers a good balance between costs and features.

• SQL Server Enterprise :

• Designed for large companies with complex needs.
• It includes all advanced features, such as high availability and advanced security.

• SQL Server Developer :

• Free version for development and testing.
• It includes all the features of the Enterprise edition, but it cannot be used in production.

• SQL Server Web :

• Optimized for web hosting.
• Low-cost licenses for web service providers.

Difference between SQL Server on-premises or in the cloud

SQL Server can be deployed both locally and in the cloud, and each approach has its advantages:

In Place

• Complete control The administrators have total control over the hardware and software.
• Customization It is possible to configure the environment according to specific needs.
• Security Greater control over the physical and logical security of data.

In the Cloud

• Scalability : It is easy to scale resources according to demand.
• Reduced costs : It is not necessary to invest in expensive hardware.
• Accessibility The data is accessible anywhere, at any time.
• Automatic updates The software updates are managed by the cloud provider.

Considerations

• Performance : Performance can vary based on infrastructure and connectivity.
• Costs : Assess the long-term cost of the cloud compared to the initial investment for on-premise solutions.
• Security Consider the security policies of the cloud provider.

How much does it cost?

The cost of SQL Server varies depending on the edition and specific needs. Here's a general overview:

• SQL Server Standard : Core-based license, with a price of 399 € per 1 device.
• SQL Server Enterprise : More expensive, with licenses starting from 499 € per 1 device.
• SQL Server Developer : Free for development and testing.
• SQL Server Web : Low-cost licenses, generally negotiated through agreements with hosting providers.

Conclusions

Microsoft SQL Server is a powerful and versatile solution for data management, suitable for a wide range of applications. Its various editions and distribution options provide flexibility and scalability to meet the needs of any organization, large or small. When choosing SQL Server, it is important to consider the specific business needs, costs, and distribution options to get the most value from the investment.