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  2. Zope Object Database - Wikipedia

    en.wikipedia.org/wiki/Zope_Object_Database

    Zope Replication Services (ZRS) is a commercial failover add-on, open-sourced since May 2013, that eliminates the single point of failure, providing hot backup for writes and load-balancing for reads. ZeoRAID is an open-source solution offering a proxy network server that distributes object stores and recovery across a series of network servers.

  3. Voldemort (distributed data store) - Wikipedia

    en.wikipedia.org/wiki/Voldemort_(distributed...

    Data is automatically replicated across servers. Data is partitioned meaning a single server contains only a portion of the total data. Each data node is independent to avoid central point of failure. Pluggable serialization allows rich keys and values including lists and tuples with named fields, as well as the integration with common ...

  4. Cosmos DB - Wikipedia

    en.wikipedia.org/wiki/Cosmos_DB

    It is designed to provide high availability, scalability, and low-latency access to data for modern applications. Unlike traditional relational databases, Cosmos DB is a NoSQL (meaning "Not only SQL", rather than "zero SQL") and vector database, [1] which means it can handle unstructured, semi-structured, structured, and vector data types. [2]

  5. Lightning Memory-Mapped Database - Wikipedia

    en.wikipedia.org/wiki/Lightning_Memory-Mapped...

    Lightning Memory-Mapped Database (LMDB) is an embedded transactional database in the form of a key-value store. LMDB is written in C with API bindings for several programming languages . LMDB stores arbitrary key/data pairs as byte arrays, has a range-based search capability, supports multiple data items for a single key and has a special mode ...

  6. Distributed SQL - Wikipedia

    en.wikipedia.org/wiki/Distributed_SQL

    relational database front end structure – meaning data represented as tables with rows and columns similar to any other RDBMS; automatically sharded data storage; underlying key–value storage [7] [1] native SQL implementation; Following the CAP Theorem, distributed SQL databases are "CP" or consistent and partition-tolerant. Algorithmically ...

  7. Greenplum - Wikipedia

    en.wikipedia.org/wiki/Greenplum

    Greenplum is a big data technology based on MPP architecture and the Postgres open source database technology. The technology was created by a company of the same name headquartered in San Mateo, California around 2005.

  8. Shard (database architecture) - Wikipedia

    en.wikipedia.org/wiki/Shard_(database_architecture)

    A database shard, or simply a shard, is a horizontal partition of data in a database or search engine. Each shard may be held on a separate database server instance, to spread load. Some data in a database remains present in all shards, [a] but some appears only in a single shard. Each shard acts as the single source for this subset of data.

  9. Comparison of object database management systems - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_object...

    8.0 (2011-03-09) C#, Java: db4o-sql.NET and Java data types GPL, custom, [1] proprietary: Native Queries, LINQ support, automatic schema evolution, Transparent Activation/Persistence, replication to RDBMS, Object Manager plugin for Visual Studio and Eclipse GemStone/S: 3.6.0 Smalltalk: None Objects and code Proprietary, free version available