From Clomosy Docs
Microsoft SQL Server is a relational database management system developed by Microsoft. As a database server, it is a software product whose primary function is to store and retrieve data as requested by other software applications that can run on the same computer or another computer over a network (including the Internet). Microsoft markets at least a dozen different versions of Microsoft SQL Server that target diverse audiences and workloads ranging from small single-machine applications to large Internet-facing applications with large numbers of concurrent users.
While you have the freedom to install MySQL on both linux and windows, although it is possible for MSSQL, it is generally not considered to install on linux because it will give the best performance on windows server. If you wish, you can even run this database on Docker. Servers with MSSQL installed on them are called MSSQL Server. To give a more descriptive example of the MSSQL side, consider an e-commerce site running on .Net. It is very likely that you can think that they keep their data, products, orders and comments in the MSSQL database, so while you are browsing their site, you are getting answers from MSSQL in the background. MSSQL is a fast and stable database management system, it supports NoSql as well as Sql.
How to use MSSQL server?
Mssql servers are generally used with Sql Server Management Studio. In this way, we can create new databases, determine the users who will have rights on these databases, create tables, and import or export our data. Afterwards, we can read or write data by connecting both through programs and our sql connection sentences in our websites, that is, through our connection strings.