OrientDB is a 2nd Generation Distributed Graph Database with the flexibility of Documents in one product with an Open Source commercial friendly license (Apache 2 license). First generation Graph Databases lack the features that Big Data demands: multi-master replication, and more flexibility for modern complex use cases.
WDBAJ$v.1 is invented in JDOLLAR Technology at year 2014 by wilmix jemin j. WDBAJ$v.1 is used in cloud computing. It is a remote database to connect to any program or J$ program or saucer , etc. It is a NOSQL database.(ie, no need to type sql). We can perform insertion , deletion, updation, deletion, encryption, and deencryption by using it.
Apache Drill allows to query non-relational datastores. It supports HBase, MongoDB, MapR-DB, HDFS, MapR-FS, Amazon S3, Azure Blob Storage, Google Cloud Storage, Swift, NAS and local files. The aggregation and query mechanism even allows to join across multiple database backends. The query plan optimizer is datastore-aware and utilizes individual NoSQL filter and query mechanisms depending on each backend scheme.
MDBM is a very fast memory-mapped key-value store with a simple interface and lots of features. It was originally based on SDBM by Ozan Yigit, and enhanced by Larry McVoy et al (at SGI). Yahoo! further enhanced it, where it has been in production use for over a decade, serving Terabytes of data.
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