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Google Cloud Datastore (Cloud Datastore) is a highly scalable, fully managed NoSQL database service offered by Google on the Google Cloud Platform. [1] Cloud Datastore is built upon Google's Bigtable and Megastore technology. [2] Google Cloud Datastore allows the user to create databases either in Native or Datastore Mode. Native Mode is ...
Bigtable development began in 2004. [1] It is now used by a number of Google applications, such as Google Analytics, [2] web indexing, [3] MapReduce, which is often used for generating and modifying data stored in Bigtable, [4] Google Maps, [5] Google Books search, "My Search History", Google Earth, Blogger.com, Google Code hosting, YouTube, [6] and Gmail. [7]
Key-value, Bigtable: Yes No No Partial Multiple writes can be combined into single operation No C++ Google New BSD License LightningDB: Key-value, memory-mapped files Yes No No Yes, ACID, MVCC No C Symas OpenLDAP Public License MongoDB: Document (JSON) Yes Yes fail-over Partial Single document atomicity [17] No C++ 10gen GNU AGPL v3.0: Neo4j ...
Google App Engine requires a Google account to get started, and an account may allow the developer to register up to 25 free applications and an unlimited number of paid applications. [24] Google App Engine defines usage quotas for free applications. Extensions to these quotas can be requested, and application authors can pay for additional ...
A cloud database is a database that typically runs on a cloud computing platform and access to the database is provided as-a-service. There are two common deployment models: users can run databases on the cloud independently, using a virtual machine image, or they can purchase access to a database service, maintained by a cloud database provider.
Apache Accumulo is a highly scalable sorted, distributed key-value store based on Google's Bigtable. [2] It is a system built on top of Apache Hadoop , Apache ZooKeeper , and Apache Thrift . Written in Java , Accumulo has cell-level access labels and server-side programming mechanisms.
Data store can refer to a broad class of storage systems including: Paper files; Simple files like a spreadsheet; File systems; Email storage systems (both server and client systems) Databases. Relational databases, based on the relational model of data; Object-oriented databases. They can save objects of an object-oriented design. NoSQL ...
A wide-column store (or extensible record store) is a type of NoSQL database. [1] It uses tables, rows, and columns, but unlike a relational database, the names and format of the columns can vary from row to row in the same table.