DBMS > Atos Standard Common Repository vs. Cloudflare Workers KV vs. Microsoft Access vs. SAP Advantage Database Server vs. Yandex Database (YDB)

System Properties Comparison Atos Standard Common Repository vs. Cloudflare Workers KV vs. Microsoft Access vs. SAP Advantage Database Server vs. Yandex Database (YDB)

Editorial information provided by DB-Engines
Name	Atos Standard Common Repository  Xexclude from comparison	Cloudflare Workers KV  Xexclude from comparison	Microsoft Access  Xexclude from comparison	SAP Advantage Database Server former name: Sybase ADS  Xexclude from comparison	Yandex Database (YDB)  Xexclude from comparison
	This system has been discontinued and will be removed from the DB-Engines ranking.
Description	Highly scalable database system, designed for managing session and subscriber data in modern mobile communication networks	A global, low-latency, key-value store for applications on Cloudflare with exceptionally high read volumes and low-latency.	Microsoft Access combines a backend RDBMS (JET / ACE Engine) with a GUI frontend for data manipulation and queries. The Access frontend is often used for accessing other datasources (DBMS, Excel, etc.)	Low-cost RDBMS with access to ISAM and FoxPro data structures	A distributed fault-tolerant database service, with high availability, scalability, immediate consistency and ACID transactions and providing an Amazon DynamoDB compatible API
Primary database model	Document store Key-value store	Key-value store	Relational DBMS	Relational DBMS	Document store Relational DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart		Score 0.20 Rank #287   Overall #42   Key-value stores	Score 145.09 Rank #9   Overall #6   Relational DBMS	Score 3.59 Rank #92   Overall #48   Relational DBMS	Score 0.50 Rank #241   Overall #37   Document stores #116   Relational DBMS
Website	atos.net/en/convergence-creators/portfolio/standard-common-repository	www.cloudflare.com/­products/­workers-kv	www.microsoft.com/­en-us/­microsoft-365/­access	www.sap.com/­products/­advantage-database-server.html	cloud.yandex.com/­en/­services/­ydb github.com/­ydb-platform/­ydb ydb.tech
Technical documentation		developers.cloudflare.com/­workers/­runtime-apis/­kv	developer.microsoft.com/­en-us/­access		cloud.yandex.com/­en/­docs/­ydb ydb.tech/­en/­docs
Developer	Atos Convergence Creators	Cloudflare	Microsoft	Sybase, SAP	Yandex
Initial release	2016	2018	1992	1993	2019
Current release	1703		1902 (16.0.11328.20222), March 2019
License Commercial or Open Source	commercial	commercial	commercial Bundled with Microsoft Office	commercial	Open Source Apache 2.0; commercial license available
Cloud-based only Only available as a cloud service	no	yes	no	no	no
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Implementation language	Java		C++
Server operating systems	Linux	hosted	Windows Not a real database server, but making use of DLLs	Linux Windows	Linux
Data scheme	Schema and schema-less with LDAP views	schema-free	yes	yes	Flexible Schema (defined schema, partial schema, schema free)
Typing predefined data types such as float or date	optional	no	yes	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.	yes	no		no	no
Secondary indexes	yes	no	yes	yes	yes
SQL Support of SQL	no	no	yes but not compliant to any SQL standard	yes	SQL-like query language (YQL)
APIs and other access methods	LDAP	HTTP REST Proprietary protocol	ADO.NET DAO ODBC OLE DB	.NET Client API ADO.NET JDBC ODBC OLE DB	RESTful HTTP API (DynamoDB compatible)
Supported programming languages	All languages with LDAP bindings	C C++ Dart JavaScript Kotlin Python Rust Scala	C C# C++ Delphi Java (JDBC-ODBC) VBA Visual Basic.NET	Delphi Perl PHP	Go Java JavaScript (Node.js) PHP Python
Server-side scripts Stored procedures	no	no	yes since Access 2010 using the ACE-engine	yes	no
Triggers	yes	no	yes since Access 2010 using the ACE-engine	yes
Partitioning methods Methods for storing different data on different nodes	Sharding cell division		none	none	Sharding
Replication methods Methods for redundantly storing data on multiple nodes	yes	yes	none	Multi-source replication CONFLICT Trigger to resolve replication conflicts Source-replica replication	Active-passive shard replication
MapReduce Offers an API for user-defined Map/Reduce methods		no	no	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Immediate Consistency or Eventual Consistency depending on configuration	Eventual Consistency		Immediate Consistency	Immediate Consistency
Foreign keys Referential integrity	no	no	yes	yes	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	Atomic execution of specific operations	no	ACID but no files for transaction logging	ACID	ACID
Concurrency Support for concurrent manipulation of data	yes	yes	yes	yes	yes
Durability Support for making data persistent	yes	yes	yes but no files for transaction logging	yes	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	yes	no		no caching of (temporary) tables can be configured	no
User concepts Access control	LDAP bind authentication		no a simple user-level security was built in till version Access 2003	fine grained access rights according to SQL-standard	Access rights defined for Yandex Cloud users
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More resources
	Atos Standard Common Repository	Cloudflare Workers KV	Microsoft Access	SAP Advantage Database Server former name: Sybase ADS	Yandex Database (YDB)
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