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DBMS > Coveo vs. Dgraph vs. Weaviate

System Properties Comparison Coveo vs. Dgraph vs. Weaviate

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Editorial information provided by DB-Engines
NameCoveo  Xexclude from comparisonDgraph  Xexclude from comparisonWeaviate  Xexclude from comparison
DescriptionAI-powered hosted search, recommendation and personalization platform providing tools for both low-code and full-code developmentDistributed and scalable native Graph DBMSAn AI-native realtime vector database engine that integrates scalable machine learning models.
Primary database modelSearch engineGraph DBMSVector DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.30
Rank#104  Overall
#11  Search engines
Score1.25
Rank#160  Overall
#15  Graph DBMS
Score1.95
Rank#115  Overall
#10  Vector DBMS
Websitewww.coveo.comdgraph.iogithub.com/­weaviate/­weaviate
weaviate.io
Technical documentationdocs.coveo.comdgraph.io/­docsweaviate.io/­developers/­weaviate
DeveloperCoveoDgraph Labs, Inc.Weaviate B.V.
Initial release201220162019
Current release1.19, May 2023
License infoCommercial or Open SourcecommercialOpen Source infoApache 2.0Open Source infocommercial license available with Weaviate Enterprise
Cloud-based only infoOnly available as a cloud serviceyesnono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageGoGo
Server operating systemshostedLinux
OS X
Windows
Data schemehybrid - fields need to be configured prior to indexing, but relationships can be exploited at query time without pre-configurationschema-freeyes, maps to GraphQL interface
Typing infopredefined data types such as float or dateyesyesyes infostring, int, float, geo point, date, cross reference, fuzzy references
XML support infoSome form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.nonono
Secondary indexesyesyesyes infoall data objects are indexed in a semantic vector space (the Contextionary), all primitive fields are indexed
SQL infoSupport of SQLnonoGraphQL is used as query language
APIs and other access methodsRESTful HTTP APIGraphQL query language
gRPC (using protocol buffers) API
HTTP API
GraphQL query language
RESTful HTTP/JSON API
Supported programming languagesC#
Java
JavaScript
Python
C#
C++
Go
Java
JavaScript (Node.js)
PHP
Python
Ruby
JavaScript / TypeScript
Python
Server-side scripts infoStored proceduresnonono
Triggersyesnono
Partitioning methods infoMethods for storing different data on different nodesyesyesSharding
Replication methods infoMethods for redundantly storing data on multiple nodesyesSynchronous replication via Raftyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyEventual Consistency
Foreign keys infoReferential integrityyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datayesACIDno
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes
User concepts infoAccess controlgranular access controls, API key management, content filtersno infoPlanned for future releasesAPI Keys
OpenID Connect Discovery
More information provided by the system vendor
CoveoDgraphWeaviate
Specific characteristicsWeaviate is an open source vector database that is robust, scalable, cloud-native,...
» more
Competitive advantagesFlexible deployment - Free, open source or fully-managed cloud vector database service...
» more
Typical application scenariosAs a database supporting the development of generative AI and semantic search applications...
» more
Key customersAll companies that have data. ​
» more
Market metricsAs of mid 2023: Over 2 million open source downloads 3500+ Weaviate Slack community...
» more
Licensing and pricing modelsWeaviate is open-source, and free to use. Weaviate is also available as a fully managed...
» more

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and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

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More resources
CoveoDgraphWeaviate
DB-Engines blog posts

Weaviate, an ANN Database with CRUD support
2 February 2021,  Etienne Dilocker, SeMI Technologies (sponsor) 

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Recent citations in the news

Leading Global Enterprises Continue to Find Success with Coveo AI-Relevance and Generative Search
1 May 2025, PR Newswire

Coveo AI-Relevance Platform Drives Success For Global Enterprises
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Coveo EX Relevance Report Reveals 42% of Information Fails Employees: Too Much Data, Not Enough Relevance
29 April 2025, Yahoo Finance

Leading Global Enterprises Continue to Find Success with Coveo AI-Relevance and Generative Search
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Dgraph on AWS: Setting up a horizontally scalable graph database
1 September 2020, Amazon Web Services (AWS)

Graph database reinvented: Dgraph secures $11.5M to pursue its unique and opinionated path
31 July 2019, ZDNET

Popular Open Source GraphQL Company Dgraph Secures $6M in Seed Round with New Leadership
20 July 2022, PR Newswire

Dgraph raises $11.5 million for scalable graph database solutions
31 July 2019, VentureBeat

Top Open Source Graph Databases
3 June 2024, MarkTechPost

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Learn how Oracle tops Weaviate for vector search scalability, availability
18 March 2025, Oracle

Weaviate unveils three AI vector database agents
6 March 2025, Blocks and Files

Video: How Weaviate Is Revolutionizing Search With AI
5 March 2025, Channel Insider

Weaviate adds agents to its tech stack to ease gen AI app development
11 March 2025, InfoWorld

Weaviate Researchers Introduce Function Calling for LLMs: Eliminating SQL Dependency to Improve Database Querying Accuracy and Efficiency
7 February 2025, MarkTechPost

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