DBMS > AlaSQL vs. Dgraph vs. Microsoft Azure SQL Database

System Properties Comparison AlaSQL vs. Dgraph vs. Microsoft Azure SQL Database

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Editorial information provided by DB-Engines
Name	AlaSQL  Xexclude from comparison	Dgraph  Xexclude from comparison	Microsoft Azure SQL Database formerly SQL Azure  Xexclude from comparison
Description	JavaScript DBMS library	Distributed and scalable native Graph DBMS	Database as a Service offering with high compatibility to Microsoft SQL Server
Primary database model	Document store Relational DBMS	Graph DBMS	Relational DBMS
Secondary database models			Document store Graph DBMS Spatial DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.55 Rank #232   Overall #35   Document stores #111   Relational DBMS	Score 1.38 Rank #145   Overall #11   Graph DBMS	Score 86.01 Rank #15   Overall #10   Relational DBMS
Website	alasql.org	dgraph.io	azure.microsoft.com/­en-us/­services/­sql-database
Technical documentation	github.com/­agershun/­alasql	dgraph.io/­docs	docs.microsoft.com/­en-us/­azure/­azure-sql
Developer	Andrey Gershun & Mathias R. Wulff	Dgraph Labs, Inc.	Microsoft
Initial release	2014	2016	2010
Current release			V12
License Commercial or Open Source	Open Source MIT-License	Open Source Apache 2.0	commercial
Cloud-based only Only available as a cloud service	no	no	yes
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Implementation language	JavaScript	Go	C++
Server operating systems	server-less, requires a JavaScript environment (browser, Node.js)	Linux OS X Windows	hosted
Data scheme	schema-free	schema-free	yes
Typing predefined data types such as float or date	no	yes	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.	no	no	yes
Secondary indexes	no	yes	yes
SQL Support of SQL	Close to SQL99, but no user access control, stored procedures and host language bindings.	no	yes
APIs and other access methods	JavaScript API	GraphQL query language gRPC (using protocol buffers) API HTTP API	ADO.NET JDBC ODBC
Supported programming languages	JavaScript	C# C++ Go Java JavaScript (Node.js) PHP Python Ruby	.Net C# Java JavaScript (Node.js) PHP Python Ruby
Server-side scripts Stored procedures	no	no	Transact SQL
Triggers	yes	no	yes
Partitioning methods Methods for storing different data on different nodes	none	yes
Replication methods Methods for redundantly storing data on multiple nodes	none	Synchronous replication via Raft	yes, with always 3 replicas available
MapReduce Offers an API for user-defined Map/Reduce methods	no	no	no
Consistency concepts Methods to ensure consistency in a distributed system	none	Immediate Consistency	Immediate Consistency
Foreign keys Referential integrity	yes	no	yes
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	yes only for local storage and DOM-storage	ACID	ACID
Concurrency Support for concurrent manipulation of data		yes	yes
Durability Support for making data persistent	yes by using IndexedDB, SQL.JS or proprietary FileStorage	yes	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	no	no Planned for future releases	fine grained access rights according to SQL-standard
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More resources
	AlaSQL	Dgraph	Microsoft Azure SQL Database formerly SQL Azure
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