Data Connectivity - allowing you to connect as a custom data source such as for MongoDB or riak.

数据连通性——可以作为客户化数据源如mongodb或riak来连接。

youdao

For MongoDB or Riak - you can manipulate data at GUI-level e.g., summarization, but it's not a traditional analysis-situation.

对于MongoDB或Riak来说，你可以在GUI层次上操纵数据，比如说摘要，但它并非传统的分析情况。

youdao

There have been two approaches: Riak and Cassandra stress availability, while HBase has stressed consistency.

FORBES: What You Need to Know About NoSQL Databases

BigCouch is an interesting effort to integrate clustering into CouchDB, making it more like Riak.

FORBES: What You Need to Know About NoSQL Databases

Riak can also be viewed as a document database, though with more flexibility about document types.

FORBES: What You Need to Know About NoSQL Databases