What language does SQL Server use?

SQL Server uses Transact-SQL (T-SQL), Microsoft's extension of standard SQL that adds procedural programming constructs like variables, loops, and stored procedures.

Microsoft offers a free SQL Server Express edition with size and feature limits; Standard and Enterprise editions require paid licensing based on cores or server/CAL models.

How does SQL Server differ from Azure SQL Database?

SQL Server is software you install and manage yourself (on-premises or on a VM), while Azure SQL Database is a fully managed PaaS version of the same engine with automatic patching, backups, and scaling.

Does SQL Server support NoSQL-style data?

Yes, it supports JSON columns, XML data types, and a graph database extension for node/edge data, alongside traditional relational tables.

What is Always On Availability Groups?

It's SQL Server's high-availability feature that replicates databases across multiple servers, enabling automatic failover and read-only secondary replicas.

Can SQL Server run on Linux?

Yes, since SQL Server 2017 Microsoft has supported Linux and Docker container deployments in addition to Windows.

Database

Microsoft SQL Server

By Microsoft

IntermediateTool7.3K learners

Microsoft SQL Server is a relational database management system (RDBMS) developed by Microsoft that stores and retrieves data using Transact-SQL (T-SQL), an extended dialect of SQL, and is widely used for enterprise transaction processing,…

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Definition

Microsoft SQL Server is a relational database management system (RDBMS) developed by Microsoft that stores and retrieves data using Transact-SQL (T-SQL), an extended dialect of SQL, and is widely used for enterprise transaction processing, business intelligence, and analytics.

Overview

SQL Server traces back to a partnership with Sybase in the late 1980s before Microsoft took the product in its own direction for Windows in the 1990s. It has since grown into a full data platform spanning the core relational engine, reporting and analysis services, integration tooling, and machine learning integration. Like other relational database systems, SQL Server organizes data into tables with defined schemas and enforces ACID Properties for transactional integrity. It supports both OLTP workloads through row-store tables and OLAP-style analytics through columnstore indexes, and it competes directly with PostgreSQL, MySQL, and IBM Db2 in the enterprise database market. Microsoft ships SQL Server in on-premises editions (Express, Standard, Enterprise) as well as a fully managed cloud version, Azure SQL Database, which shares the same query engine but removes most infrastructure management. Organizations building on Microsoft's data stack often pair SQL Server administration skills with broader cloud training such as the AWS Solutions Architect course when running hybrid or multi-cloud environments.

Key Features

Transact-SQL (T-SQL) procedural extension of standard SQL
Row-store and columnstore indexes for mixed OLTP/OLAP workloads
Always On Availability Groups for high availability and disaster recovery
In-database machine learning via SQL Server Machine Learning Services
Integration Services (SSIS), Analysis Services (SSAS), and Reporting Services (SSRS)
Transparent data encryption and row-level security for compliance
In-memory OLTP engine for high-throughput transactional tables
Tight integration with the Windows Server and .NET ecosystem

Use Cases

Enterprise transaction processing for ERP and CRM systems

Business intelligence and reporting via SSRS and Power BI

Data warehousing with columnstore-backed analytical queries

Line-of-business application backends built on .NET

Hybrid cloud deployments migrating toward Azure SQL Database

Financial systems requiring strict ACID transaction guarantees

Frequently Asked Questions

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