Apache Cassandra is a massively scalable, column family NoSQL database solution that provides users the ability to store large amounts of structured and unstructured data. In the big data landscape, it fits into the structured storage category and is simply an alternative or additional data store option.

What type of database is Cassandra?

Apache Cassandra is a free and open-source, distributed, wide-column store, NoSQL database management system designed to handle large amounts of data across many commodity servers, providing high availability with no single point of failure.

Is Cassandra row based?

Cassandra is a partitioned row store. Rows are organized into tables with a required primary key. Partitioning means that Cassandra can distribute your data across multiple machines in an application-transparent matter.

Is Cassandra a schema?

Cassandra has a flexible schema. Database is the outermost container that contains data corresponding to an application. Keyspace is the outermost container that contains data corresponding to an application. Tables are the entities of a database.

Is Cassandra a relational database?

Cassandra is a high performance and highly scalable distributed NoSQL database management system. RDBMS is a Data base management system or software which is designed for relational databases. Cassandra is a NoSQL database. RDBMS uses SQL for querying and maintaining the database.

Is Cassandra decentralized?

Although Cassandra is a completely decentralized sys- tem we have learned that having some amount of co- ordination is essential to making the implementation of some distributed features tractable.

What is Cassandra architecture?

Cassandra was designed to handle big data workloads across multiple nodes without a single point of failure. It has a peer-to-peer distributed system across its nodes, and data is distributed among all the nodes in a cluster.

Is Cassandra columnar or key value?

Both, Cassandra and HBase are columnar. Key-Value stores store keys value pairs, generally in buckets, exactly like a hash table data structure. Example is Redis, Memcache, etc. Column stores seem to store data in related rows, but they actually serialize the data into columns.

Is Cassandra row based or column based?

Cassandra is an open source, column-oriented database designed to handle large amounts of data across many commodity servers. Unlike a table in a relational database, different rows in the same table (column family) do not have to share the same set of columns.

Is Cassandra key value or wide column?

Apache Cassandra is an open-source, NoSQL, wide column data store that can quickly ingest and process massive amounts of data.

What type of consistency is provided by Cassandra?

So, with consistency in Cassandra, you have two core types of consistency. immediate consistency and eventual consistency. Immediate consistency: is having the identical data on all replica nodes at any given point in time.

What is Cassandra wide column?

A wide column store is a type of key-value database. 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. In Cassandra all of the rows (in a table) should have a row key then each row key can have multiple columns.

What topology is Cassandra?

Here’s a quick summary of the Apache Cassandra architecture tutorial: Cassandra has a ring-type architecture. Cassandra has no master nodes and no single point of failure. Cassandra supports network topology with multiple data centers, multiple racks, and nodes.

Can Cassandra handle unstructured data?

Apache Cassandra is a massively scalable, column family NoSQL database solution that provides users the ability to store large amounts of structured and unstructured data. In the big data landscape, it fits into the structured storage category and is simply an alternative or additional data store option.

Which is better MongoDB vs Cassandra?

Conclusion: The decision between the two depends on how you will query. If it is mostly by the primary index, Cassandra will do the job. If you need a flexible model with efficient secondary indexes, MongoDB would be a better solution.

What is the difference between Cassandra and Hadoop?

Apache Cassandra is a NoSQL database ideal for high-speed, online transactional data, while Hadoop is a big data analytics system that focuses on data warehousing and data lake use cases.