DBMS > LevelDB vs. Qdrant
System Properties Comparison LevelDB vs. Qdrant
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|Editorial information provided by DB-Engines|
|Name||LevelDB Xexclude from comparison||Qdrant Xexclude from comparison|
|Description||Embeddable fast key-value storage library that provides an ordered mapping from string keys to string values||A high-performance vector database with neural network or semantic-based matching|
|Primary database model||Key-value store||Vector DBMS|
|Current release||1.23, February 2021|
|License Commercial or Open Source||Open Source BSD||Open Source Apache Version 2.0|
|Cloud-based only Only available as a cloud service||no||no|
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|Server operating systems||Illumos|
|Typing predefined data types such as float or date||no||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||no||yes Keywords, numberic ranges, geo, full-text|
|SQL Support of SQL||no||no|
|APIs and other access methods||gRPC|
RESTful HTTP/JSON API OpenAPI 3.0
|Supported programming languages||C++|
Java 3rd party binding
Python 3rd party binding
|Server-side scripts Stored procedures||no|
|Partitioning methods Methods for storing different data on different nodes||none||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||none||Collection-level replication|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Eventual Consistency, tunable consistency|
|Foreign keys Referential integrity||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no|
|Concurrency Support for concurrent manipulation of data||yes||yes|
|Durability Support for making data persistent||yes with automatic compression on writes||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||Key-based authentication|
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