DBMS > Microsoft Azure Cosmos DB vs. Microsoft SQL Server

System Properties Comparison Microsoft Azure Cosmos DB vs. Microsoft SQL Server

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Our visitors often compare Microsoft Azure Cosmos DB and Microsoft SQL Server with MongoDB, PostgreSQL and Microsoft Azure SQL Database.

Editorial information provided by DB-Engines

Name

Description

Globally distributed, horizontally scalable, multi-model database service

Microsofts flagship relational DBMS

Primary database model

Document store
Graph DBMS
Key-value store
Wide column store

Relational DBMS

Secondary database models

Spatial DBMS

Document store
Graph DBMS
Spatial DBMS

DB-Engines Ranking measures the popularity of database management systems
Trend Chart

Score	40.22
Rank	#27	Overall
	#4	Document stores
	#2	Graph DBMS
	#3	Key-value stores
	#3	Wide column stores

Score	941.20
Rank	#3	Overall
	#3	Relational DBMS

Website

azure.microsoft.com/services/cosmos-db

www.microsoft.com/en-us/sql-server

Technical documentation

docs.microsoft.com/azure/cosmos-db

docs.microsoft.com/en-US/sql/sql-server

Developer

Microsoft

Initial release

2014

1989

Current release

SQL Server 2019, November 2019

License

Commercial or Open Source

commercial

restricted free version is available

Cloud-based only

Only available as a cloud service

yes

DBaaS offerings (sponsored links)

Database as a Service

Providers of DBaaS offerings, please contact us to be listed.

Implementation language

C++

Server operating systems

hosted

Linux
Windows

Data scheme

schema-free

yes

Typing

predefined data types such as float or date

yes

JSON types

yes

XML support

Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.

yes

Secondary indexes

yes

All properties auto-indexed by default

yes

SQL

Support of SQL

SQL-like query language

yes

APIs and other access methods

DocumentDB API
Graph API (Gremlin)
MongoDB API
RESTful HTTP API
Table API

ADO.NET
JDBC
ODBC
OLE DB
Tabular Data Stream (TDS)

Supported programming languages

.Net
C#
Java
JavaScript
JavaScript (Node.js)
MongoDB client drivers written for various programming languages
Python

C#
C++
Delphi
Go
Java
JavaScript (Node.js)
PHP
Python
R
Ruby
Visual Basic

Server-side scripts

Stored procedures

JavaScript

Transact SQL, .NET languages, R, Python and (with SQL Server 2019) Java

Triggers

JavaScript

yes

Partitioning methods

Methods for storing different data on different nodes

Sharding

Implicit feature of the cloud service

tables can be distributed across several files (horizontal partitioning); sharding through federation

Replication methods

Methods for redundantly storing data on multiple nodes

yes

Implicit feature of the cloud service

yes, but depending on the SQL-Server Edition

MapReduce

Offers an API for user-defined Map/Reduce methods

with Hadoop integration

Integration with Hadoop/HDInsight on Azure*

Consistency concepts

Methods to ensure consistency in a distributed system

Bounded Staleness
Consistent Prefix
Eventual Consistency
Immediate Consistency

Consistency level configurable on request level
Session Consistency

Immediate Consistency

Foreign keys

Referential integrity

yes

Transaction concepts

Support to ensure data integrity after non-atomic manipulations of data

Multi-item ACID transactions with snapshot isolation within a partition

ACID

Concurrency

Support for concurrent manipulation of data

yes

Durability

Support for making data persistent

yes

In-memory capabilities

Is there an option to define some or all structures to be held in-memory only.

yes

User concepts

Access control

Access rights can be defined down to the item level

fine grained access rights according to SQL-standard

More information provided by the system vendor

We invite representatives of system vendors to contact us for updating and extending the system information,
and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

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More resources

DB-Engines blog posts

MySQL is the DBMS of the Year 2019
3 January 2020, Matthias Gelbmann, Paul Andlinger

The struggle for the hegemony in Oracle's database empire
2 May 2017, Paul Andlinger

Microsoft SQL Server is the DBMS of the Year
4 January 2017, Matthias Gelbmann, Paul Andlinger

show all

Recent citations in the news

Microsoft fixes cross-account vulns in Azure Database for PostgreSQL service
28 April 2022, The Register

An Introduction and Tutorial for Azure Cosmos DB
25 February 2022, InfoQ.com

Researchers discover critical flaw in Azure Cosmos DB
27 August 2021, TechTarget

Integrate Azure and Spring with Spring Cloud Azure
9 May 2022, iProgrammer

Hackers manage to smash Microsoft's Azure Cosmos DB database cluster, reveal poor security practices
12 November 2021, MSPoweruser

provided by Google News

Google Needs Another Database To Attack Oracle, DB2, And SQL Server Directly
16 May 2022, The Next Platform

How to Set Up a Microsoft SQL Server Database in Docker on Linux - MUO
8 May 2022, MakeUseOf

Rockset Enables Real-Time Analytics for Microsoft SQL Server
4 May 2022, Database Trends and Applications

Review: YugabyteDB does PostgreSQL proud
16 May 2022, InfoWorld

SQL Server Transformation Market Size, Outlook, Strategies, Manufacturers, Type and Application, Global Forecast To 2029 – SMU Daily Mustang
15 May 2022, SMU Daily Mustang

provided by Google News

Job opportunities

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Azure | COSMOS DB Engineer - Remote
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Azure Cosmos DB Consultant
Technologent, Remote

Azure Data Engineer
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SQL Server DBA
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SQL Server Developer
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SQL Server Architect
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