Search results
Results From The WOW.Com Content Network
MongoDB is a source-available, cross-platform, ... With MongoDB 3.0, locks are implemented at the collection level for the MMAPv1 storage engine, [65] ...
A database engine (or storage engine) is the underlying software component that a database management system (DBMS) uses to create, read, update and delete (CRUD) data from a database. Most database management systems include their own application programming interface (API) that allows the user to interact with their underlying engine without ...
Different NoSQL databases, such as DynamoDB, MongoDB, Cassandra, Couchbase, HBase, and Redis, exhibit varying behaviors when querying non-indexed fields. Many perform full-table or collection scans for such queries, applying filtering operations after retrieving data.
Reads from the indexes on the primary instance are read-after-write consistent and users can delete or create new indexes at any time. DocumentDB was an enhancement to the Amazon Aurora relational database system, [5] specifically the PostgreSQL-compatible edition. Its architecture separates storage and computing so that each layer can scale ...
The MongoRocks project provides a storage module for MongoDB where the storage engine is RocksDB. [ 37 ] [ 38 ] [ 39 ] A related program is Rocks Strata, a tool written in Go , which allows managing incremental backups of MongoDB when RocksDB is used as the storage engine.
The member function erase can be used to delete an element from a collection, but for containers which are based on an array, such as vector, all elements after the deleted element have to be moved forward to avoid "gaps" in the collection. Calling erase multiple times on the same container generates much overhead from moving the elements.
fully managed MongoDB v3.6-compatible database service Yes DynamoDB: Amazon Web Services: Proprietary Java, JavaScript, Node.js, Go, C#.NET, Perl, PHP, Python, Ruby, Rust, Haskell, Erlang, Django, and Grails: fully managed proprietary NoSQL database service that supports key–value and document data structures Yes Elasticsearch: Shay Banon
GridFS – GridFS is a specification for storing and retrieving files that exceed the BSON-document size limit of 16 MB for MongoDB. lnfs (long names) LTFS (Linear Tape File System for LTO and Enterprise tape) MVFS – MultiVersion File System, proprietary, used by IBM DevOps Code ClearCase.