DBMS > HarperDB vs. Microsoft Azure Cosmos DB vs. Qdrant
System Properties Comparison HarperDB vs. Microsoft Azure Cosmos DB vs. Qdrant
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|Editorial information provided by DB-Engines|
|Name||HarperDB Xexclude from comparison||Microsoft Azure Cosmos DB former name was Azure DocumentDB Xexclude from comparison||Qdrant Xexclude from comparison|
|Description||Ultra-low latency distributed database with an intuitive REST API supporting NoSQL and SQL (including joins). Deployment of functions and databases simultaneously with a consolidated node-level architecture.||Globally distributed, horizontally scalable, multi-model database service||A high-performance vector database with neural network or semantic-based matching|
|Primary database model||Document store||Document store|
Wide column store
|Secondary database models||Spatial DBMS|
|Current release||3.1, August 2021|
|License Commercial or Open Source||commercial free community edition available||commercial||Open Source Apache Version 2.0|
|Cloud-based only Only available as a cloud service||no||yes||no|
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|Server operating systems||Linux|
|Data scheme||dynamic schema||schema-free||schema-free|
|Typing predefined data types such as float or date||yes JSON data types||yes JSON types||Numbers, Strings, Geo, Boolean|
|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|
|Secondary indexes||yes||yes All properties auto-indexed by default||yes Keywords, numberic ranges, geo, full-text|
|SQL Support of SQL||SQL-like data manipulation statements||SQL-like query language||no|
|APIs and other access methods||JDBC|
RESTful HTTP/JSON API
Graph API (Gremlin)
RESTful HTTP API
RESTful HTTP/JSON API OpenAPI 3.0
|Supported programming languages||.Net|
MongoDB client drivers written for various programming languages
|Partitioning methods Methods for storing different data on different nodes||A table resides as a whole on one (or more) nodes in a cluster||Sharding Implicit feature of the cloud service||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||yes the nodes on which a table resides can be defined||yes Implicit feature of the cloud service||Collection-level replication|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||with Hadoop integration Integration with Hadoop/HDInsight on Azure*||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Bounded Staleness|
Immediate Consistency Consistency level configurable on request level
|Eventual Consistency, tunable consistency|
|Foreign keys Referential integrity||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||Atomic execution of specific operations||Multi-item ACID transactions with snapshot isolation within a partition|
|Concurrency Support for concurrent manipulation of data||yes||yes||yes|
|Durability Support for making data persistent||yes, using LMDB||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes||yes|
|User concepts Access control||Access rights for users and roles||Access rights can be defined down to the item level||Key-based authentication|
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|Related products and services|
|3rd parties||CData: Connect to Big Data & NoSQL through standard Drivers.|
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|HarperDB||Microsoft Azure Cosmos DB former name was Azure DocumentDB||Qdrant|
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