Name: v.janaki Class: II-msc., computer science Batch: 2017-2019 Incharge staff: ms.m.florance dayana The document discusses NoSQL databases. It defines NoSQL, provides examples of different types of NoSQL databases like document, columnar, and graph databases, and describes some key characteristics of NoSQL databases including being non-relational, distributed, not supporting ACID properties, and not having a fixed table schema. It also outlines some common uses of NoSQL databases and advantages like scale out architecture, housing large volumes of structured and unstructured data, dynamic schemas, auto-sharding, and replication.